Database Users

[Q] Nexus 7 Booting Failed & No ADB Connection

Hi Guys
Another rooting/flashing noob here that's messed up his N7 sorry
I know there's other threads with similair issues but they all advise fixes involving using adb connection and usb debugging which I cannot do (explained below)
My device will turn on, it goes to the google logo with the green start icon, I can select and go into bootloader and recovery, if I press start it says booting failed in the upper left corner and will go no further.
My device is plugged in via usb, i have the latest rookit 1.5.5, and sdk installed etc, i also have the naked drivers and the factory images from google on my pc.
The machine came with 4.1.2 installed (nakasi-jzo54k).
To mess it up, somewhere in between updating to 4.2, rooting and unrooting it, and flashing it i must have done something wrong but being a happy button bashing noob I don't know what exactly...
And yes I also didn't make a backup of any kind because well I'm just a moron and lesson well learnt.
So yeah, I have no adb connection, can't go into debuging mode and it won't boot.
Does anybody know if there is anyway I can restore my tablet please? Any help would be hugely appreciated!
Many thanks

greyphox said:
Hi Guys
Another rooting/flashing noob here that's messed up his N7 sorry
I know there's other threads with similair issues but they all advise fixes involving using adb connection and usb debugging which I cannot do (explained below)
My device will turn on, it goes to the google logo with the green start icon, I can select and go into bootloader and recovery, if I press start it says booting failed in the upper left corner and will go no further.
My device is plugged in via usb, i have the latest rookit 1.5.5, and sdk installed etc, i also have the naked drivers and the factory images from google on my pc.
The machine came with 4.1.2 installed (nakasi-jzo54k).
To mess it up, somewhere in between updating to 4.2, rooting and unrooting it, and flashing it i must have done something wrong but being a happy button bashing noob I don't know what exactly...
And yes I also didn't make a backup of any kind because well I'm just a moron and lesson well learnt.
So yeah, I have no adb connection, can't go into debuging mode and it won't boot.
Does anybody know if there is anyway I can restore my tablet please? Any help would be hugely appreciated!
Many thanks
Click to expand...
Click to collapse
If you got half way through rooting, what has happened to your ADB?
Try the option "Return to stock and Flash stock image" try that.
What message does ADB give you etc?

Wilks3y said:
If you got half way through rooting, what has happened to your ADB?
Try the option "Return to stock and Flash stock image" try that.
What message does ADB give you etc?
Click to expand...
Click to collapse
Hi thanks
Well when I run 'adb devices' in dos the device does not come up, blank etc
but if in the advanced utilities section of the rookit it will reboot it and say connected etc when i try to boot/flash image for bootloader, system, recovery etc but always goes back to google logo and won't boo up, can still get into bootloader and recovery though
i fully rooted it and unrooted it, i tried to flash 4.1.1 to see if i could thats when this all started
if i try flash stock + unroot option (device is on/normal) sub option the rootkit tries to check adb status and says not connected etc which makes sense as dos won't detect it, if this helps in device manager its coming up as...
samsung android phone
android bootloader interface
so i that driver in rootkit to manually install the naked drivers in device manager and it will say they are up to date etc
so the advanced utilities section for boot/flash image will communicate but no other.....
flash stock root used to detect it but even then in dos it would give me the 'too many links error'
I just hope there is a solution.... and i hope all that makes sense sorry
Cheers

greyphox said:
Hi thanks
Well when I run 'adb devices' in dos the device does not come up, blank etc
but if in the advanced utilities section of the rookit it will reboot it and say connected etc when i try to boot/flash image for bootloader, system, recovery etc but always goes back to google logo and won't boo up, can still get into bootloader and recovery though
i fully rooted it and unrooted it, i tried to flash 4.1.1 to see if i could thats when this all started
if i try flash stock + unroot option (device is on/normal) sub option the rootkit tries to check adb status and says not connected etc which makes sense as dos won't detect it, if this helps in device manager its coming up as...
samsung android phone
android bootloader interface
so i that driver in rootkit to manually install the naked drivers in device manager and it will say they are up to date etc
so the advanced utilities section for boot/flash image will communicate but no other.....
flash stock root used to detect it but even then in dos it would give me the 'too many links error'
I just hope there is a solution.... and i hope all that makes sense sorry
Cheers
Click to expand...
Click to collapse
Have you added ADB to your envioronment varibles?
If not,
Control Panel -> Advanced -> Envioronment Variables, then add the path to your SDK folder to it, after the other variables (Variables are separated using ; )
Also, try to install the drivers, using Wug's method, thats THE ONLY ONE that worked for me, unistall anything to do with nexus before hand.
Goto Device manager, find anything that involves Nexus or Android.
Then Start the "Full Driver Method" on Wugs kit.
This should sort your driver issue.
Then the Nexus should be visible through ADB.
PS- Your adb isnt broken if its accepting the commands.
The reason your device isnt listed, is the Drivers.
You have driver issues, so try the what I just stated and let me know .

nexus toolkit from dev section

ngoralph said:
nexus toolkit from dev section
Click to expand...
Click to collapse
Have you even read what hes said?
He's already tried the toolkit...

Wilks3y said:
Have you added ADB to your envioronment varibles?
If not,
Control Panel -> Advanced -> Envioronment Variables, then add the path to your SDK folder to it, after the other variables (Variables are separated using ; )
Also, try to install the drivers, using Wug's method, thats THE ONLY ONE that worked for me, unistall anything to do with nexus before hand.
Goto Device manager, find anything that involves Nexus or Android.
Then Start the "Full Driver Method" on Wugs kit.
This should sort your driver issue.
Then the Nexus should be visible through ADB.
PS- Your adb isnt broken if its accepting the commands.
The reason your device isnt listed, is the Drivers.
You have driver issues, so try the what I just stated and let me know .
Click to expand...
Click to collapse
The first step in the full driver guide in wugs kit is to enable usb debugging which i cannot do though as it won't power on.......
I have added the environmental variabes before yes sorry, qbkings utube vids showed me how to do that
Just tried these steps
toolkit home screen, flash stock + unroot (softbricked bootloop)
then naksaki 4.2 jzo54k, auto download and extract.
it got to dos stage and i get 'Failed bootloader is locked'
??? thanks again

Wilks3y said:
Have you added ADB to your envioronment varibles?
If not,
Control Panel -> Advanced -> Envioronment Variables, then add the path to your SDK folder to it, after the other variables (Variables are separated using ; )
Also, try to install the drivers, using Wug's method, thats THE ONLY ONE that worked for me, unistall anything to do with nexus before hand.
Goto Device manager, find anything that involves Nexus or Android.
Then Start the "Full Driver Method" on Wugs kit.
This should sort your driver issue.
Then the Nexus should be visible through ADB.
PS- Your adb isnt broken if its accepting the commands.
The reason your device isnt listed, is the Drivers.
You have driver issues, so try the what I just stated and let me know .
Click to expand...
Click to collapse
OK unlocked it via the main unlock option on rootkit and it unlocked ok, so im now re-trying te softbricked option to flash etc and its currently.. writing system...

greyphox said:
OK unlocked it via the main unlock option on rootkit and it unlocked ok, so im now re-trying te softbricked option to flash etc and its currently.. writing system...
Click to expand...
Click to collapse
Sounds good mate !
Need any extra help drop us a PM I'd be happy to lend a hand.

Wilks3y said:
Sounds good mate !
Need any extra help drop us a PM I'd be happy to lend a hand.
Click to expand...
Click to collapse
MOOOOOO!
It wrote to the system ok and now its hanging on erasing user data, googled and its happend to others.......
OK, more help please, been hanging for5 mins lol

Issue Fixed I think, he PM'd me.

Unlocked but... what do I do now?
Newbie but old or old but newbie - With the need and not just a curious want, to be able to "rename" my Nexus 7 v1 so I can see a friendly name in my old DD-WRTed Linksys GL, I finally had enough gumption to try rooting this tablet.
So, I was excited that when I used Nexus Root Toolkit v1.6.8 on my Nexus 7 v1, following the "easy and visual" steps, I actually managed to unlock this device. But when it came to the "root" part, the ADB repeatedly failed to recognize this tablet. I tried all the suggested steps and remedies, but so far, nada.
The tablet now boots past the white "Google" with an unlocked icon at the bottom, but nothing beyond thea big white "right-arrow" on the screen. I can choose a Wi-Fi signal to connect to, but that's it.
This is my first tablet and I have been playing with it for the past 3 months. I know people here are more than willing to help, so thank you in advance.
BTW, I am not that young to spend hours way past sleeping time to scour for answers and piece it together.

Wilks3y said:
Issue Fixed I think, he PM'd me.
Click to expand...
Click to collapse
Could you let me know his solution as I have exactly the same problem and have used all of his previous (unsuccessful) fixes myself?

Kindred Mole said:
Could you let me know his solution as I have exactly the same problem and have used all of his previous (unsuccessful) fixes myself?
Click to expand...
Click to collapse
+1

This worked for me...
Download the image file for your device which you can find at the Google Developer's site
Copy the uncompressed files from the image archive to the platform-tools folder of the Android SDK
Use the up and down volume on the device to get into bootloader mode. Connect the device to a usb port.
Open a command prompt in the platform tools folder and run the flash-all batch file to load the image to your device. After a few minutes I got the happy X logo to get me back to a blank slate.

[Q] Stuck on fastboot, unlocked bootloader, no adb mode

Dear XDA Geniuses,
I have a 16gb Nexus 7 WI-Fi. I was using Nexus 7 toolkit 2.0.0 to try and flash my nexus 7 back to the the stock google rom (option 9 in the toolkit.) It seems as if it wiped out cyanogen mod 10, which i had been using, as well as clockwork recovery. My nexus 7 now boot up with the google logo and the unlocked padlock on the bootom. using the volume rocker i can select the bootloader option and get an android figure with his chest open.
this is the only option i can select. my attempts have been:
1)connect it to computer. Windows 7 and Windows 8 will not recognize it, nor let me access it from the command line.
2. Use nexus 7 toolkit, which DOES recognize it in fastboot mode, to flash a new recovery on there. it says that a command failed, and won't let it write to it.
3) install adb and android sdk tools. my tablet won't show up under devices, and I am not sure if it is still in usb debugging mode. command line will not recognize it as an adb device and will not control tablet.
when i looked at this thread it was dealing with a locked bootloader, while mine is unlocked. it also wanted command line operations from the computer, which does not seem to work for me.
i was attempting to do something like this (laptop mag blog how to hard reset a bricked nexus 7) but without my nexus 7 showing up under devices I am not sure what my options are.
TLDR: Nexus 7 16gb WIFI only boots into boot recovery. Using nexus 7 toolkit to recognize as fastboot. otherwise will not show up on computer. no recovery, no boot image.
Thank you for reading.

I went back and reread the thread on flashing and restoring nexus 7 to stock in this forum, but every command I try returns " command write failed invalid argument ". Using android sdk manager i can get it to recognize the device in fastboot mode. my drivers there seem to be working.
edit: I got all the way to flashing the bootloader, but it returned "no such device or address. "

JerryMc88 said:
I went back and reread the thread on flashing and restoring nexus 7 to stock in this forum, but every command I try returns " command write failed invalid argument ". Using android sdk manager i can get it to recognize the device in fastboot mode. my drivers there seem to be working.
edit: I got all the way to flashing the bootloader, but it returned "no such device or address. "
Click to expand...
Click to collapse
latest progress can be found at imgur slash TAikq
now it is say data transfer failure - too many links. 146.84 seconds.

it was my cable. the cable mounted it in fastboot mode, but would not allow writing. switched out the cable, and we are up and running again. thanks!

Um.... Glad we could help?
Sent from my Nexus 7 using xda app-developers app

Sticky?
Man, I would love to see this sticky posted, or at least a list of errors and fixes stickied. I have been looking for an answer to the same issue for two days. Finding out it was just a lousy cable really really really pissed me off... I'm glad someone figured it out and actually posted their solution, most of these wind up with nothing.

OMG, I've tried to flash my N7 with a new lollipop 5.1 today and got the same issue as described here http://forum.xda-developers.com/showthread.php?t=2724273 then, after 5 or 6 hours of thinking what is going on, I finally found this very old thread and guess what? Changing this sh***ty cable I was using solved the problem.

Use USB ports on the back of your computer, not the front.

OSX unlock, twrp, root

Everybody seem to have Windows, here are simplified OSX instruction, note you do not need to have "adb" working, it's just convenient to use it to reboot into bootloader (just another name for fastboot), but since my mac was being stupid and claiming it was offline, I just did it myself via Power + Volume Down buttons.
Code:
platform-tools qdinh$ ./adb devices
List of devices attached
05b50e8a offline
UNLOCK BOOTLOADER (this will factory reset your device)
1. download platform-tools-osx.zip
2. unzip platform-tools-osx.zip
3. download nexus7TWRP.img
4. put nexus7TWRP.img in same folder as platform-tools
5. connect nexus 7 via usb port to your mac
6. boot nexus 7 into fastboot by holding Power + Volume Down
7. open terminal to platform-tools folder
8. type "./fastboot devices" and it should list your device, mine is 05b50e8a
Code:
platform-tools qdinh$ ./fastboot devices
05b50e8a fastboot
platform-tools qdinh$
9. type "./fastboot oem unlock" this will unlock your device and also reset back to factory
Code:
platform-tools qdinh$ ./fastboot oem unlock
...
(bootloader) Unlocking bootloader...
(bootloader) erasing userdata...
(bootloader) erasing userdata done
(bootloader) erasing cache...
(bootloader) erasing cache done
(bootloader) Unlocking bootloader done!
OKAY [ 13.340s]
finished. total time: 13.340s
platform-tools qdinh$
10. on nexus 7, use volumes button to select "START" system, POWER button to select choice, IMPORTANT LET IT FINISH BOOTING
FLASH TWRP RECOVERY
1. boot nexus 7 into fastboot by holding Power + Volume Down
2. open terminal to platform-tools folder
3. type "./fastboot flash recovery nexus7TWRP.img"
Code:
platform-tools qdinh$ ./fastboot flash recovery nexus7TWRP.img
sending 'recovery' (9612 KB)...
OKAY [ 0.438s]
writing 'recovery'...
OKAY [ 0.408s]
finished. total time: 0.846s
platform-tools qdinh$
ROOT DEVICE
1. download SuperSu.zip and transfer it to your nexus 7 via device web browser (it will be in Downloads) or usb cable.
2. boot nexus 7 into fastboot by holding Power + Volume Down
3. use volume button to select "RECOVERY", POWER button to select choice
4. navigate TWRP, install SuperSu.zip
5. reboot device via TWRP
FYI, if you boot into recovery and have some broken android guy, just flash TWRP again which is what happened to me. Can power off nexus 7 by holding down Power button.
UPDATED: figured out why adb keeps showing device offline, apparently you need newer version 1.0.31. I updated platform-tools-osx.zip to have the updated version, so now you boot into bootloader (fastboot via adb)
Code:
platform-tools qdinh$ ./adb devices
List of devices attached
05b50e8a device
platform-tools qdinh$ ./adb reboot-bootloader
https://www.dropbox.com/sh/zt9gbvsafnaupls/fqHRgPe-Ar

Thanks!
Thanks nhidog!
I get mine on Monday and this will be the first thing i do!

Thanks for the guide.
How long did your boot take after the unlock? Coming up on 10 minutes with nothing and starting to get a little nervous...

Ironclad Lou said:
Thanks for the guide.
How long did your boot take after the unlock? Coming up on 10 minutes with nothing and starting to get a little nervous...
Click to expand...
Click to collapse
Mine took about 5 minutes.

nhidog said:
Mine took about 5 minutes.
Click to expand...
Click to collapse
Welp, mine is definitely hosed. After 15, powered down, relocked, unlocked and tried again. Same result. Hopefully someone can provide some insight. Just skimming through some of the other posts and there was some discussion about issues with USB 3 vs USB 2 ports. Maybe I'll try a different machine.

Ironclad Lou said:
Welp, mine is definitely hosed. After 15, powered down, relocked, unlocked and tried again. Same result. Hopefully someone can provide some insight. Just skimming through some of the other posts and there was some discussion about issues with USB 3 vs USB 2 ports. Maybe I'll try a different machine.
Click to expand...
Click to collapse
Try booting into recovery and wiping the data. Alternatively since you know how to fastboot now, you can try items from this post http://forum.xda-developers.com/showthread.php?t=2381438

nhidog said:
Try booting into recovery and wiping the data. Alternatively since you know how to fastboot now, you can try items from this post http://forum.xda-developers.com/showthread.php?t=2381438
Click to expand...
Click to collapse
Recovery is just giving me the dead Android guy...I'll take a peek at the other thread and see what I can come up with. Hopefully I can get this figured out, I'd hate to have to return it since I know my local BB is now out of stock.

Ironclad Lou said:
Recovery is just giving me the dead Android guy...I'll take a peek at the other thread and see what I can come up with. Hopefully I can get this figured out, I'd hate to have to return it since I know my local BB is now out of stock.
Click to expand...
Click to collapse
From other thread:
5.) Recovery will show you an Android with a red triangle, press POWER and VOL UP at the same time once.
6.) Scroll down and select Wipe data/Factory reset then reboot system now after it is finished
7.) Hopefully you should see your screen turn on and the glowing Nexus logo, first boot will take a little while and eventually you will be at the Welcome screen.

nhidog said:
From other thread:
5.) Recovery will show you an Android with a red triangle, press POWER and VOL UP at the same time once.
6.) Scroll down and select Wipe data/Factory reset then reboot system now after it is finished
7.) Hopefully you should see your screen turn on and the glowing Nexus logo, first boot will take a little while and eventually you will be at the Welcome screen.
Click to expand...
Click to collapse
First thing I saw after I jumped over to that thread . So, re-locked I'm back to the welcome screen and all looks functional. Time to try again I guess! Thanks again for your help, much appreciated. Will update once I get it all working.

Ironclad Lou said:
First thing I saw after I jumped over to that thread . So, re-locked I'm back to the welcome screen and all looks functional. Time to try again I guess! Thanks again for your help, much appreciated. Will update once I get it all working.
Click to expand...
Click to collapse
Cool man, good luck. You wouldn't happen to be in the camp of BB group that failed the initial update that cannot be deferred? Think some thread floating around, just unlock then boot into recovery and wipe should be good to go.

Ironclad Lou said:
Recovery is just giving me the dead Android guy...I'll take a peek at the other thread and see what I can come up with. Hopefully I can get this figured out, I'd hate to have to return it since I know my local BB is now out of stock.
Click to expand...
Click to collapse
If u can can't get into recovery (red triangle)try to reflash twrp via adb command.
Candy Painted

nhidog said:
Cool man, good luck. You wouldn't happen to be in the camp of BB group that failed the initial update that cannot be deferred? Think some thread floating around, just unlock then boot into recovery and wipe should be good to go.
Click to expand...
Click to collapse
Possible. I had my 4-year old bouncing around when I first got it home to setup, so it's possible I may not have been paying close enough attention. It's all resolved now. I probably would have been fine if I had just booted straight to recovery after the unlock, up+power at the triangle and wiped data from there. Hopefully if someone else runs into a similar problem they notice this.

A little worried to try and flash and brick because it's seems some people have had issues.

Well we can help you out...not that scary plus all the recovery images posted can always revert of things goes wrong.
Sent from my Nexus 7 using xda app-developers app

nhidog said:
Well we can help you out...not that scary plus all the recovery images posted can always revert of things goes wrong.
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
Well no help needed. :laugh: Works like a charm!!!!

Cool man... now find your CPU speed bin and post it in my other thread
Sent from my Nexus 7 using xda app-developers app

Just an FYI, if your Mac says 'device offline' (per OP) turn USB Debugging on in Developer options (Settings/About Tablet/tap build # until you get a toast message saying developer options are enabled).
Always good to keep USB Debugging checked. In this case it's no big deal as a manual booting to fastboot works fine, but if you ever get in trouble flashing you'll want the ability to access your device via ADB and it won't work unless USB Debugging is enabled.
We've all forgotten at one point or another so it is always a good thing to take care of right away.
Sent from my Nexus 7 using Tapatalk HD

Well, I had never rooted a device before (primarily due to owning a Mac and there not being a ton of Mac info out there), but I just got the new Nexus 7 and gave these directions a whirl...
Afraid of bricking it, and got a little scared when I got the red triangle Android dude, but reflashed TWRP and got it going.
One question: is the SuperUser file the most recent build? Only reason I'm asking is because my new Nexus has a build number of JSS15J with a kernel date of Thu Jul 18 and my old Nexus that just got the update has a build number of JWR66V and a kernel date of Tue Jun 11.
I'm all new to this, but I was just wondering if there is any importance in the difference between the two. Thanks!

dbeth said:
Well, I had never rooted a device before (primarily due to owning a Mac and there not being a ton of Mac info out there), but I just got the new Nexus 7 and gave these directions a whirl...
Afraid of bricking it, and got a little scared when I got the red triangle Android dude, but reflashed TWRP and got it going.
One question: is the SuperUser file the most recent build? Only reason I'm asking is because my new Nexus has a build number of JSS15J with a kernel date of Thu Jul 18 and my old Nexus that just got the update has a build number of JWR66V and a kernel date of Tue Jun 11.
I'm all new to this, but I was just wondering if there is any importance in the difference between the two. Thanks!
Click to expand...
Click to collapse
Cool... glad its all working. You have latest build and kernel, don't worry. SuperSu will update from Play store if needed
Sent from my Nexus 7 using xda app-developers app

Awesome. Good to know. Thanks again for the simple instructions.
Sent from my Nexus 7 using Tapatalk HD
---------- Post added at 05:17 AM ---------- Previous post was at 05:02 AM ----------
One more thing, how do OS updates work after rooting?
Sent from my Nexus 7 using Tapatalk HD

Unlocked but can't root/install CWM

I used the toolkit for mac and it unlocked me, but when it came to the next steps it said device not found and then told me to highlight recovery and press start, when I do I get the android with the red ! symbol.
Can someone help me?

That symbol is a security feature within the stock recovery, volume up and power to access the stock recovery.
Sent from my Nexus 4 using Tapatalk 4

I tried that it's not working I press up then power the phone reboots and the red ! symbol shows up...
I searched and saw hold power and press up when I see the red ! but it just reboots the phone...
help please?
Sent from my GT-N5110 using Tapatalk 4

ADB wont work in stock recovery
roguedroid said:
I tried that it's not working I press up then power the phone reboots and the red ! symbol shows up...do you know the adb instructions on how to push supersymmetric and cwm?
edit my adb now won't recognize my phone even though it did a few mins ago...
I'm frustrated, been trying to access the stock recovery for the past several mins and simply can't.
help please?
Sent from my GT-N5110 using Tapatalk 4
Click to expand...
Click to collapse
For me also Stock recovery never worked. Just try to flash CWM or TWRP.
Btw, What toolkit did you use and how did you install the drivers. Please answer these, so that someone can help you better.(Or is it just the 'mac toolkit' ?)
My suggestion: PLZ DO NOT USE TOOLKIT. If you are stuck at some point while using the toolkit, then you'll not know what went wrong and how you can correct it. Do it manually. It is the most hassle-free method. Trust me.
I think that ADB will not work in stock recovery(may be you can boot normally into your phone and then try adb). The thing which you are looking for is 'fastboot'.
1) Restart ur phone (Power Button + Volume Down, i guess) and land in the bootloader and connect your phone to PC.
2) In CMD prompt(or Terminal), type 'fastboot devices'. If your device gets listed here, then fastboot is working and drivers are properly installed. If not, then drivers are not properly installed in your PC. You need both ADB and FASTBOOT drivers. Install them properly.
PS: For MAC, i think the command is slightly different. Something like './fastboot devices' . Please look for the same in this forum or just google it and find out.
3) Follow this guide for flashing CWM and Rooting.
http://forum.xda-developers.com/showthread.php?t=2266654
4) For properly installing the Drivers, read " A. Install the drivers " in the below thread (actually you can read the entire thread )
http://forum.xda-developers.com/showthread.php?t=2010312&highlight=cwm+6+0+3+5
My knowledge is limited to Windows PC, sorry if I am not of much help. Thanks !

badhri said:
For me also Stock recovery never worked. Just try to flash CWM or TWRP.
Btw, What toolkit did you use and how did you install the drivers. Please answer these, so that someone can help you better.(Or is it just the 'mac toolkit' ?)
My suggestion: PLZ DO NOT USE TOOLKIT. If you are stuck at some point while using the toolkit, then you'll not know what went wrong and how you can correct it. Do it manually. It is the most hassle-free method. Trust me.
I think that ADB will not work in stock recovery(may be you can boot normally into your phone and then try adb). The thing which you are looking for is 'fastboot'.
1) Restart ur phone (Power Button + Volume Down, i guess) and land in the bootloader and connect your phone to PC.
2) In CMD prompt(or Terminal), type 'fastboot devices'. If your device gets listed here, then fastboot is working and drivers are properly installed. If not, then drivers are not properly installed in your PC. You need both ADB and FASTBOOT drivers. Install them properly.
PS: For MAC, i think the command is slightly different. Something like './fastboot devices' . Please look for the same in this forum or just google it and find out.
3) Follow this guide for flashing CWM and Rooting.
http://forum.xda-developers.com/showthread.php?t=2266654
4) For properly installing the Drivers, read " A. Install the drivers " in the below thread (actually you can read the entire thread )
http://forum.xda-developers.com/showthread.php?t=2010312&highlight=cwm+6+0+3+5
My knowledge is limited to Windows PC, sorry if I am not of much help. Thanks !
Click to expand...
Click to collapse
I used the nexus 4 Mac rootkit I found in here.
It unlocked my phone fine. But when it came to installing a recovery and root it didn't.
Neither my adb or fastboot are working now before I unlocked and I messed around and they worked now nada ...
I went to YouTube saw my problem tried pressing volume up and power like in the video and it just gives me a black screen and either turns the phone off or reboots it normally...not sure if in supposed to hold power and let go of volume or vice versa.
I placed all the files on the storage I just need to access stock recovery which I strangely cannot now...
Tried framearoot and got nowhere.
Very frustrating
Sent from my GT-N5110 using Tapatalk 4

Sort out the drivers and adb,fastboot
roguedroid said:
I used the nexus 4 Mac rootkit I found in here.
It unlocked my phone fine. But when it came to installing a recovery and root it didn't.
Neither my adb or fastboot are working now before I unlocked and I messed around and they worked now nada ...
I went to YouTube saw my problem tried pressing volume up and power like in the video and it just gives me a black screen and either turns the phone off or reboots it normally...not sure if in supposed to hold power and let go of volume or vice versa.
I placed all the files on the storage I just need to access stock recovery which I strangely cannot now...
Tried framearoot and got nowhere.
Very frustrating
Sent from my GT-N5110 using Tapatalk 4
Click to expand...
Click to collapse
Just as I mentioned, i also had the same problem with stock recovery. So I simply flashed a Custom one(CWM, in my case)
Get the ADB and FASTBOOT working and that'll solve your recovery problem. Try fiddling with your drivers again. Not sure how to do that in MAC. If FASTBOOT is working, the you can boot into a Custom Recovery(you need not even flash it) and perform whatever you need to.
fastboot -c "lge.kcal=0|0|0|x" boot customrecovery.img
Again, look at the efrant's guide i referred above; i took this from there only.Remember to replace 'customrecovery.img', with the actual downloaded custom recovery image name.
Or you can try posting your problem with the toolkit, in mac toolkit's thread.

I have been youtubing everything and finally got to
Reboot system
apply update from adb
wipe data/factory reset
wipe cache partition.
I now can get adb working so I tried ./adb sideload cwm from my desktop and it is giving me signature verification failed. installation aborted.
What can I do to resolve this?
I searched xda and no one can solve this issue from the threads I've read.

I fixed it! Whooohoooo! Installed cwm and root ....now to install pa rom.
Thanks for the help!
Sent from my GT-N5110 using Tapatalk 4

[Q] Installing Custom ROM on Wrong OS Version, Looking for Solutions

I apologize if this question has been answered already, but I just spent 15 minutes using the search button and could not find a response.
I just installed Matr1x v10.5 (http://forum.xda-developers.com/showthread.php?t=2007231) onto my Nexus 4 but it had JB 4.2. Based on the version notes of the thread, I assumed that it was backwards compatible with my phone and therefore installed the new version on my Nexus 4. Now every time I turn on my Nexus 4 the screen is blank. What can I do to fix this issue? Will it require a reset so that all my data is lost? Thanks.

What do you mean with '... The screen is blank'?
Can you get past the google bootanimation?
Sent from my Nexus 4 using xda app-developers app

failly said:
What do you mean with '... The screen is blank'?
Can you get past the google bootanimation?
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
Nope, basically once I turn it on I see the "Google" text, and then the screen goes blank as in it's black. Basically the back light is on and you can see that it's on but the background is still black.

pooq said:
Nope, basically once I turn it on I see the "Google" text, and then the screen goes blank as in it's black. Basically the back light is on and you can see that it's on but the background is still black.
Click to expand...
Click to collapse
Go into recovery and flash the stock kernel. If that doesnt work you need to do a full wipe and reflash the rom.

failly said:
What do you mean with '... The screen is blank'?
Can you get past the google bootanimation?
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
Chromium_ said:
Go into recovery and flash the stock kernel. If that doesnt work you need to do a full wipe and reflash the rom.
Click to expand...
Click to collapse
Theoretically, if I flash v10.0 (which accommodates JB 4.2) it should fix the issue right?
I'm at a dilemma because I do not know if there are any other ways to insert the kernel into my phone as there is no microSD option on the Nexus 4. Does anyone know how I could potentially get the file into my phone?

pooq said:
Theoretically, if I flash v10.0 (which accommodates JB 4.2) it should fix the issue right?
I'm at a dilemma because I do not know if there are any other ways to insert the kernel into my phone as there is no microSD option on the Nexus 4. Does anyone know how I could potentially get the file into my phone?
Click to expand...
Click to collapse
Can you access recovery? If yes mount your storage and you can transfer the files.
Sent from my Nexus 4 using xda app-developers app

failly said:
Can you access recovery? If yes mount your storage and you can transfer the files.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
I had already tried that, but once I connected my usb into my laptop I still couldn't transfer any files over.
In the end I reset my phone to factory settings, so the display still shows "Google". Just to confirm, the reason why this logo has been displayed on my phone for a while is because it is working to restore the factory setting (e.g. OS) correct?

pooq said:
I had already tried that, but once I connected my usb into my laptop I still couldn't transfer any files over.
In the end I reset my phone to factory settings, so the display still shows "Google". Just to confirm, the reason why this logo has been displayed on my phone for a while is because it is working to restore the factory setting (e.g. OS) correct?
Click to expand...
Click to collapse
I can't tell for sure since it never happend to me but I don't think if you choose to reset your phone to factory settings it will stay at the google logo.
If you choose to reset to facory settings I think you just will boot into recovery with that an android standing with something in his belly with a loading bar.
You can try this.
1.Boot into bootloader.
2A.Flash TWRP with the fastboot command and go to step 3.
2B.Flash stock N4 image with the fastboot command and profit!
3a.Try to mount storage and transfer another rom.
3b.Restore a backup.
Hopefully this works.
Sent from my Nexus 4 using xda app-developers app

failly said:
I can't tell for sure since it never happend to me but I don't think if you choose to reset your phone to factory settings it will stay at the google logo.
If you choose to reset to facory settings I think you just will boot into recovery with that an android standing with something in his belly with a loading bar.
You can try this.
1.Boot into bootloader.
2A.Flash TWRP with the fastboot command and go to step 3.
2B.Flash stock N4 image with the fastboot command and profit!
3a.Try to mount storage and transfer another rom.
3b.Restore a backup.
Hopefully this works.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
I have tried the above instructions up to step 3 because it did not work for me.
It shows the only files in my internal storage(/sdcard) are a file that says (Up A Level) and TWRP. Also, whenever I want to reboot it prompts "No OS Installed! Are you sure you wish to reboot?" At this point I am only interested in a factory reset now so that I can reinstall the initial JB 4.0 that came with the Nexus 4 and then upgrade to JB 4.3. However, whenever I do factory reset via recovery mode, I am stuck with an empty phone with the files I mentioned above.
What can I do to fix the situation? Thanks.

pooq said:
I have tried the above instructions up to step 3 because it did not work for me.
It shows the only files in my internal storage(/sdcard) are a file that says (Up A Level) and TWRP. Also, whenever I want to reboot it prompts "No OS Installed! Are you sure you wish to reboot?" At this point I am only interested in a factory reset now so that I can reinstall the initial JB 4.0 that came with the Nexus 4 and then upgrade to JB 4.3. However, whenever I do factory reset via recovery mode, I am stuck with an empty phone with the files I mentioned above.
What can I do to fix the situation? Thanks.
Click to expand...
Click to collapse
I think the reason that a factory reset won't help since there is no OS on the phone so it cannot reset something that isn't there.
And with the steps I mentioned, can you get into bootloader or does it directly boot into recovery.
Another thing you can try(I don't think it will work but I never tried it so you never know)
Download this toolkit:
http://forum.xda-developers.com/showthread.php?t=2015469
There is an option to flash to stock completly, that will maybe do the trick.
Good luck!
Sent from my Nexus 4 using xda app-developers app

failly said:
I think the reason that a factory reset won't help since there is no OS on the phone so it cannot reset something that isn't there.
And with the steps I mentioned, can you get into bootloader or does it directly boot into recovery.
Another thing you can try(I don't think it will work but I never tried it so you never know)
Download this toolkit:
http://forum.xda-developers.com/showthread.php?t=2015469
There is an option to flash to stock completly, that will maybe do the trick.
Good luck!
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
I can get into bootloader fine, it does not boot directly into recovery.
My Nexus 4 is already flashed with TWRP. I have installed the program from the link you provided, however, I have not used it to flash my phone again as one of the prerequisites to using the program is selecting which OS version I am using (at this point I am not using any) and want to prevent any further issues from occurring.
It seems like I can't really do anything with my phone unless I get a JB OS reinstalled, which is what I am currently struggling with. I am presently trying to find a way to copy the downloaded Nexus image files provided online into my internal storage so I can install them.

pooq said:
I can get into bootloader fine, it does not boot directly into recovery.
My Nexus 4 is already flashed with TWRP. I have installed the program from the link you provided, however, I have not used it to flash my phone again as one of the prerequisites to using the program is selecting which OS version I am using (at this point I am not using any) and want to prevent any further issues from occurring.
It seems like I can't really do anything with my phone unless I get a JB OS reinstalled, which is what I am currently struggling with.
Click to expand...
Click to collapse
Okay since you can get into bootloader thats great news!
Have you tried to manually download the nexus 4 image from google?
NOTE this are direct download links:
4.3:
https://dl.google.com/dl/android/aosp/occam-jwr66v-factory-08d2b697.tgz
4.2.2:
https://dl.google.com/dl/android/aosp/occam-jdq39-factory-345dc199.tgz
Here is an excellent guide:
http://www.androidpolice.com/2013/0...-to-android-4-3-jwr66v-and-root-it-right-now/
Scenario #2 on that guide suits you!
I think this will do the trick!
Sent from my Nexus 4 using xda app-developers app

You just have to do the following :
A) flash a recovery via fastboot (fastboot flash recovery recovery.zip)
B) now go ahead and boot from your recovery, and push the rom of your choice, in case you don't have one already inside your sdcard (adb push ROM.zip /sdcard/ROM.zip)
C) flash your recently copied rom of choice to your phone. (if necessary, wipe data, cache and dalvik cache)

failly said:
Okay since you can get into bootloader thats great news!
Have you tried to manually download the nexus 4 image from google?
NOTE this are direct download links:
4.3:
https://dl.google.com/dl/android/aosp/occam-jwr66v-factory-08d2b697.tgz
4.2.2:
https://dl.google.com/dl/android/aosp/occam-jdq39-factory-345dc199.tgz
Here is an excellent guide:
http://www.androidpolice.com/2013/0...-to-android-4-3-jwr66v-and-root-it-right-now/
Scenario #2 on that guide suits you!
I think this will do the trick!
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
I just spent a couple of hours reading through the guides (and trying them out) which led me to several other guides. To be incredibly honest, I am completely confused as there is a plethora of new information thrown at me. I have to pose several questions before I continue:
1) When you say bootloader, are you referring to the fastboot bootloader screen that pops up after holding the volume down button and the power button? I just wanted to confirm this as I am starting to feel you are referring to something different after reading several guides.
2) Is the scenario 2 guide you posted basically a method to "sideload" the JB 4.3 into the storage of my Nexus 4 so I can install it via Recovery Mode?
I tried installing the drivers but I cannot seem to do it successfully as I do not even have a starting OS for my phone in the first place. I can not access a theoretical "Developer Mode" either from when I first rooted my phone.
So basically, I do not understand how I can get the direct downloads from Google (the JB 4.3 files) and get them into the internal storage of my Nexus 4 to install the OS.
Is there a simpler way to do this? If not, here is my current progress. At the moment I am stuck at this guide (http://forum.xda-developers.com/showpost.php?p=34552123&postcount=1) from the previous link you linked and am between C-D. I cannot get my laptop to recognize my device via fastboot devices in command prompt (D). To be honest, this is the second time I've seen this guide but could not get it working properly which is why I used the file provided at (http://forum.xda-developers.com/showthread.php?t=2015469) to root my Nexus 4.the OS[/B]. Is there a simpler way to do this? At the moment I am stuck at this guide (http://forum.xda-developers.com/showpost.php?p=34552123&postcount=1) from the previous link you linked and am between C-D. I cannot get my laptop to recognize my device via fastboot devices in command prompt (D). To be honest, this is the second time I've seen this guide but could not get it working properly which is why I used the file provided at (http://forum.xda-developers.com/showthread.php?t=2015469) to root my Nexus 4.

Yes, the bootloader is the one where you press vol down and the power button together, that's the place where you select to go to the recovery, use fastboot.
First thing you got to do is turn on your phone on the bootloader as mentioned above. Then, assuming you downloaded this: [NEXUS 4 TOOLKIT V2.0.0] from here http://forum.xda-developers.com/showthread.php?t=1995688, open up command prompt and go to this address with "cd C:\Google_Nexus_4_ToolKit" or where you decided to install your toolkit. On windows explorer, go there and rename fastboot-toolkit or whatever it is called to fastboot to make things simpler.
Type in cmd: fastboot devices to check if it recognizes your phone.
If it doesn't; then install these drivers (you should have your device already connected via USB to your computer): https://www.dropbox.com/s/a808emeelvxkwyc/usb_driver.rar
Go to Control Panel\Hardware and Sound > Device Manager. Your phone should appear with an exclamation mark somewhere, right click it and click on update driver:
-Click on browse my computer software
-Let me pick from a list of device drivers on my computer
-Have disk
-Browse for where you downloaded the drivers I linked you to then click ok.
-You should find within the next page something that says Android Bootloader Interface, double click it and finish the installation.
After that's done, then type in fastboot devices on cmd again, it should show up now.
Then, go to here and download TWRP 2.6.0.0 http://techerrata.com/file/twrp2/mako/openrecovery-twrp-2.6.0.0-mako.img , that will be your recovery. After you've downloaded move it to C:\Google_Nexus_4_ToolKit to make matters easier.
NOTE: IF YOUR BOOTLOADER IS LOCKED YOU WILL HAVE TO UNLOCK IT , this can be done by typing fastboot oem unlock on command prompt
Now, simply type in this command: fastboot flash recovery openrecovery-twrp-2.6.0.0-mako.img you will now have a recovery on your device.
With the volume keys, choose to boot from the recovery. TWRP will load, while its loading, rename adb-toolkit to adb to make things easier. When its done loading, type in adb devices to see if it recognizes your phone, if it doesn't use your drivers again but this time instead of choosing Android Bootloader Interface, pick the one that says ADB.
When that's done, and it recognizes your device with the adb devices command you can now proceed to "push" or "copy/move a ROM you've downloaded in your computer towards your phone".
Of course you have to download a ROM, like Paranoid Android for example: http://goo.im/devs/paranoidandroid/roms/mako/pa_mako-3.69-20130722.zip , along with its GApps: http://goo.im/devs/paranoidandroid/roms/gapps/pa_gapps-full-4.2-20130719-signed.zip
You might have to even update your radio and bootloader in the future too, but let's leave it at that for now.
After you are done downloading the ROM of your choice, then type in these commands (assuming ADB works)
adb push pa_mako-3.69-20130722.zip /sdcard/
adb push pa_gapps-full-4.2-20130719-signed.zip /sdcard/
Having moved these two files inside your phone, now its time to flash them.
1) Go to Wipe on TWRP and simply swipe to factory reset
2) Go back and click on Install, look for pa_mako-3.69-20130722.zip and then add pa_gapps-full-4.2-20130719-signed.zip to the queue, swipe to install.
After that's done, simply reboot your phone and it should start booting up Paranoid Android and you're done. Might give you a few issues if you have an old radio and bootloader, but that can be fixed by flashing the new versions of these two in TWRP. Can be found here: https://www.copy.com/s/JniBu/4.3 files (mako) (these can be pushed via ADB like before, or you can simply download them on your phone when its working)
Hope this helps, don't think I can be more detailed.

wammie said:
Yes, the bootloader is the one where you press vol down and the power button together, that's the place where you select to go to the recovery, use fastboot.
First thing you got to do is turn on your phone on the bootloader as mentioned above. Then, assuming you downloaded this: [NEXUS 4 TOOLKIT V2.0.0] from here http://forum.xda-developers.com/showthread.php?t=1995688, open up command prompt and go to this address with "cd C:\Google_Nexus_4_ToolKit" or where you decided to install your toolkit. On windows explorer, go there and rename fastboot-toolkit or whatever it is called to fastboot to make things simpler.
Type in cmd: fastboot devices to check if it recognizes your phone.
If it doesn't; then install these drivers (you should have your device already connected via USB to your computer): https://www.dropbox.com/s/a808emeelvxkwyc/usb_driver.rar
Go to Control Panel\Hardware and Sound > Device Manager. Your phone should appear with an exclamation mark somewhere, right click it and click on update driver:
-Click on browse my computer software
-Let me pick from a list of device drivers on my computer
-Have disk
-Browse for where you downloaded the drivers I linked you to then click ok.
-You should find within the next page something that says Android Bootloader Interface, double click it and finish the installation.
After that's done, then type in fastboot devices on cmd again, it should show up now.
Then, go to here and download TWRP 2.6.0.0 http://techerrata.com/file/twrp2/mako/openrecovery-twrp-2.6.0.0-mako.img , that will be your recovery. After you've downloaded move it to C:\Google_Nexus_4_ToolKit to make matters easier.
NOTE: IF YOUR BOOTLOADER IS LOCKED YOU WILL HAVE TO UNLOCK IT , this can be done by typing fastboot oem unlock on command prompt
Now, simply type in this command: fastboot flash recovery openrecovery-twrp-2.6.0.0-mako.img you will now have a recovery on your device.
With the volume keys, choose to boot from the recovery. TWRP will load, while its loading, rename adb-toolkit to adb to make things easier. When its done loading, type in adb devices to see if it recognizes your phone, if it doesn't use your drivers again but this time instead of choosing Android Bootloader Interface, pick the one that says ADB.
When that's done, and it recognizes your device with the adb devices command you can now proceed to "push" or "copy/move a ROM you've downloaded in your computer towards your phone".
Of course you have to download a ROM, like Paranoid Android for example: http://goo.im/devs/paranoidandroid/roms/mako/pa_mako-3.69-20130722.zip , along with its GApps: http://goo.im/devs/paranoidandroid/roms/gapps/pa_gapps-full-4.2-20130719-signed.zip
You might have to even update your radio and bootloader in the future too, but let's leave it at that for now.
After you are done downloading the ROM of your choice, then type in these commands (assuming ADB works)
adb push pa_mako-3.69-20130722.zip /sdcard/
adb push pa_gapps-full-4.2-20130719-signed.zip /sdcard/
Having moved these two files inside your phone, now its time to flash them.
1) Go to Wipe on TWRP and simply swipe to factory reset
2) Go back and click on Install, look for pa_mako-3.69-20130722.zip and then add pa_gapps-full-4.2-20130719-signed.zip to the queue, swipe to install.
After that's done, simply reboot your phone and it should start booting up Paranoid Android and you're done. Might give you a few issues if you have an old radio and bootloader, but that can be fixed by flashing the new versions of these two in TWRP. Can be found here: https://www.copy.com/s/JniBu/4.3 files (mako) (these can be pushed via ADB like before, or you can simply download them on your phone when its working)
Hope this helps, don't think I can be more detailed.
Click to expand...
Click to collapse
The first thing I'd like to do before reporting my progress report is to thank you and failly for taking the time to help me out. You both have contributed tremendously in trying to help me out with this, so I would like to thank you both for that.
1) I had installed the sdk program and changed the adb path (following this guide http://www.redmondpie.com/how-to-set-up-android-adb-and-fastboot-on-windows-tutorial/)
Following wammie's guide:
2) Booted into bootloader
3) Downloaded and installed NEXUS 4 TOOLKIT V2.0.0 (had used it before but it didn't work for me so I relied on a different program to root my phone). Renamed fastboot-toolkit to fastboot
4) Typed fastboot devices in in cmd, does not recognize phone
5) Uninstalled current usb drivers and installed usb drivers provided. The driver I chose to install for was titled "Android". The other ! mark was "Base System Device" which was something I had never seen before until today when I had reinstalled usb drivers
6) Typed fastboot devices in cmd again and still nothing has changed
I am unable to continue any further as fastboot does not recognize my phone when I have it under bootloader. I had downloaded all the files that were recommended in your post. I think the reason why I cannot access fastboot devices is because there is literally no OS running in my phone. I could be wrong though.
I guess I'll take a break and call it a night since I've been trying to fix this problem the past 13 hours or so. Any additional feedback and support is appreciated!
Additional Notes: I have tried this both on my laptops (Windows 8) and on my desktop PC (Windows 7)

Luckly, if windows doesn't recognize your device while in fastboot it isn't because you don't have a OS installes but because not correctly set up drivers.
I posted a link some posta ago about a toolkit:
http://forum.xda-developers.com/showthread.php?t=2015469
When opening the program at the top there is a button called full driver installation, press it and follow the instructions.
Sent from my Nexus 4 using xda app-developers app

http://i.imgur.com/sOT7FGh.png
http://i.imgur.com/WNEKb0z.png
http://i.imgur.com/vUmTDcZ.png
http://imgur.com/da7NGwB
http://i.imgur.com/bjmhXZv.png
This is what you should do when you are updating the drivers, its imperative you get those drivers working. Otherwise, you won't get access to fastboot.

Oh I would recommend using a Windows 7 PC.
Windows 8 can also do the trick but you maybe need to disable driver signature enforcement, so you better go with windows 7 for now.
Sent from my Nexus 4 using xda app-developers app

Status Update:
I had spent a whole day reformatting my Windows 7 machine and am back at it. I have made a bit more progress than before.
1) After typing in fastboot flash recovery openrecovery-twrp-2.6.0.0-mako.img in command prompt, under the "List of devices attached" it is blank (i.e. there is no device attached). http://i.imgur.com/TnyBCKS.png
2) I have successfully installed the usb driver on my PC the first time when the only explanation mark was titled "Android", however the only Android option at the moment now is labelled "Android Bootloader Interface". No such thing as ADB (or any variations including Android ADB Interface) exists.
3) In TWRP Recovery mode, I see an exclamation mark titled mako but I believe that is irrelevant. I have tried installing the drivers to this just in case but failed. I then tried it again in Bootloader mode and mako is gone and Android Device pops up again with "Android Bootloader Interface"
4) I have tried restarting my PC and repeating the above steps.
Edit:
5) The only time I see an Android Composite ADB Interfaces is when I boot normally to the "Google" screen. However, I cannot move any of my ROMS over into my phone. When I typed "adb devices" it shows a bunch of characters with offline beside it. I do not have any options to reinstall any drivers for this.
From my understanding,I should be able to access the Android Composite ADB Interface while in recovery mode, which should let me transfer my ROMs over... but the issue is I cannot access Android Composite ADB Interface while in recovery mode.
Also, is there any reason why I shouldn't use the official JB 4.3 img as the ROM I want to install on my phone?