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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.
After a successful day of unlokcing and rooting my new tablet, I decided to try and experiment with the dpi to try and get some phone based apps working using an app called "LCD Density Modder" I changed to Mdpi - 160, and the tablet turned off. It restarts to the Goolge logo, with an unlocked lock then dies again. What went wrong and how do I fix it? Help me out guys :crying:
Try holding down the power button for 10-20 seconds.
If that doesn't work, leave it plugged in for a couple hours and try again.
Sent from my Nexus 7
It turns on, and fastboot will show up, but Android will not boot. Or if it is booting, it's only a black screen. Is there any way to erase the pixel settings I've applied through recovery or the Nexus 7 toolkit? Or am I totally missing the point?
Edit: The screen does actually appear to be lit. Just black
theshafe said:
After a successful day of unlokcing and rooting my new tablet, I decided to try and experiment with the dpi to try and get some phone based apps working using an app called "LCD Density Modder" I changed to Mdpi - 160, and the tablet turned off. It restarts to the Goolge logo, with an unlocked lock then dies again. What went wrong and how do I fix it? Help me out guys :crying:
Click to expand...
Click to collapse
do you have a custom rom recovery installed? go into your recovery and wipe data/factory reset. or if you flashed a custom rom, go into the recovery wipe data/factory reset and reflash your rom.
I've tried this, to no avail. After the Google logo, a portion of the screen flashes pink and the tablet goes dark again
You can use wugs toolkit to reinstall a factory image, or you can sideload one using fastboot command, wugs method is easier. The file you edited is the build.prop if you still have adb access you could use adb shell to edit the file and change the settings back. Sadly I don't have a clue as to the default settings for dpi in the n7 build.prop.
Cheers Danny
After attempting to factory reset, and trying all these methods I realized that USB debugging is now disabled :crying:
Have you tried booting into recovery (power and volume down) whilst the tablet is connected to the PC via USB? I found that helps you get into recovery sometimes from bootloops etc.
Cheers Danny
Yes, I can get into recovery and fastboot but any attempt at booting Android results in a black screen
Kk come down.. Boot into Fastboot download wugfresh toolkit, and click the flash back to stock and unroot option and check the box that says device will not boot.. Problem solved
Sent from my Nexus 7 using Tapatalk HD
I tried to, but the drivers wont install because it won't boot
Forgive me, I can do all this but I'm a little slow :silly:
Shafe when you rooted your tablet how did you go about it?
Did you use a toolkit? If so which one?
What type of computer did you use, windows, Mac or Linux?
If it was windows which windows was it, XP, vista, 7, 8?
There are known problems in getting drivers to work with certain windows etc. But if you used a toolkit to root then you must have had working drivers at some point during the process.
Any more info you can provide will help get to the bottom of this
Cheers Danny
I used the not so creatively named Nexus 7 ToolKit v 4.0.0 on windows 7. I've had the drivers and just reinstalled them from the toolkit, so they are now on there again. The problem is that I factory reset and since Android won't boot, I have no way of enabling USB debugging
Grab wugs from here
http://forum.xda-developers.com/showthread.php?t=1766475
[Toolkit] Wug's Nexus Root Toolkit v1.6.1 [Updated 11/30/12]
And follow Francis instructions posted above, should sort your problem. You won't need more drivers as you already have them installed.
Cheers Danny
I tried this a couple times, but after trying to flash stock + unroot it says my ADB device was not found because USB debugging isn't on
Found a guide that will allow you to restore stock through fastboot
http://forums.androidcentral.com/ne...1477-guide-nexus-7-factory-image-restore.html
I am not experienced enough with fastboot to really be of more help. Hope this does the trick.
Cheers Danny
Yep, I found this a few minutes ago and am giving it a shot. I'm inexperienced also, but I guess I'll have to learn! Thanks brother
Forget all toolkits and use fastboot, you'll gain twice that way; working N7 and also you'll have gained some knowledge.
It's a lot easier than it seems.
Sent from my Nexus 7 using xda premium
i try rooting my N7 but wiped all data on in so i have no os and im stuck in the google screen and cant do anything. i tried anything that i understood on forums, my pc wont recognize it. nexus root kit doesnt seem to work cause it say adb device not found and fastboot cant find it either. so am stuck with a n7 with no os, have tried reinstalling the stock os image from google but i cant boot the tablet at all it just stays in that google screen.
so if anyone can help me atleast try to reinstall the stock os ......because i am a noob
You have to be in boot loader mode.
Sent from my Nexus 7 using Tapatalk 2
Adb has to find the device before the adb and fastboot commands will work
Sent from my Nexus 7 using xda app-developers app
I did the same thing to my 7 the second day after I bought it. What you described is exactly what I had experienced. This is what I did to restore my 7. I kept holding the power button until it turned off. Afterwards, I charged it for a while cause the battery was low.Then I got the tablet to go into fastboot mode by holding volume down 1st and then the power button. After that, I flashed using the Nexus 7 toolkit. Upon flashing, download 4.1.2 firmware using the toolkit and flash that to your tablet. 4.2.1wouldn't work for me. That brought my 7 back to life in new stock form.
In conclusion, I re-rooted using the toolkit and flashed a custom 4.2.1 rom using TWRP recovery.
If you can get your 7 into fastboot and your computer still will not recognize your 7, reinstall the drivers to your computer. I used PDA drivers. That worked for me.
I hope this works for you.
Is OK guys just use this http://forum.xda-developers.com/showthread.php?t=:D
Sent from my Nexus 7 using xda premium
try this
SiLeNtZoR said:
i try rooting my N7 but wiped all data on in so i have no os and im stuck in the google screen and cant do anything. i tried anything that i understood on forums, my pc wont recognize it. nexus root kit doesnt seem to work cause it say adb device not found and fastboot cant find it either. so am stuck with a n7 with no os, have tried reinstalling the stock os image from google but i cant boot the tablet at all it just stays in that google screen.
so if anyone can help me atleast try to reinstall the stock os ......because i am a noob
Click to expand...
Click to collapse
try this
try the site priyanairmumbai.blogspot.in/2014/01/to-upgrade-nexus-7-and-2013-models-to.html
SiLeNtZoR said:
i try rooting my N7 but wiped all data on in so i have no os and im stuck in the google screen and cant do anything. i tried anything that i understood on forums, my pc wont recognize it. nexus root kit doesnt seem to work cause it say adb device not found and fastboot cant find it either. so am stuck with a n7 with no os, have tried reinstalling the stock os image from google but i cant boot the tablet at all it just stays in that google screen.
so if anyone can help me atleast try to reinstall the stock os ......because i am a noob
Click to expand...
Click to collapse
I DID THE SAME THING
our devices are not "bricked", just screwed really bad...
did you manage to fix it?
.
..
messing with the TWRP recovery i accidentally deleted android and all the files and then tried to boot without an OS. Now my tablet is stuck in the google screen with an unlocked padlock in the bottom
Is there a way that i can install android from my pc to my tablet?
I tried the toolkit
But it needs to enable "usb debuging" but I can not switch on my tablet to enable it, since i have no OS. I tried pressing the side buttons to go to recovery or bootloader mode, neither worked
Is there another way to install the drivers and then the Android stock OS to the tablet, the tablet used to be rooted in stock android 4.2.1. It is a Nexus wifi 2012
I can use a solution that works in either Ubuntu, Fedora or Windows
Thank you
Put nexus in download mode and install firmware with odin. Drivers will install when you connect nexus to pc in download.
Sent from my SM-N9005 using xda app-developers app
shayind4 said:
Put nexus in download mode and install firmware with odin. Drivers will install when you connect nexus to pc in download.
Sent from my SM-N9005 using xda app-developers app
Click to expand...
Click to collapse
can you detail the procedure for me plz? how do i put the nexus in download mode when it is stuck in the google screen ?
Nakas21 said:
messing with the TWRP recovery i accidentally deleted android and all the files and then tried to boot without an OS. Now my tablet is stuck in the google screen with an unlocked padlock in the bottom
Is there a way that i can install android from my pc to my tablet?
I tried the toolkit
But it needs to enable "usb debuging" but I can not switch on my tablet to enable it, since i have no OS. I tried pressing the side buttons to go to recovery or bootloader mode, neither worked
Is there another way to install the drivers and then the Android stock OS to the tablet, the tablet used to be rooted in stock android 4.2.1. It is a Nexus wifi 2012
I can use a solution that works in either Ubuntu, Fedora or Windows
Thank you
Click to expand...
Click to collapse
I had more or less the same issues. I had also performed a factory reset. Finally got it back last night using mskip toolkit,after numerous tries using both tool kits. I downloaded factory image to the toolkit through the options in the menu,then flashed it,answering yes to the format question at first. It kept getting stuck near the end sending. Tried about 5 times and changed USB cord to different ports,lei ally it went through,went from google logo to x to google logo back to x(I stayed patient at this point and did not assume boot loop) it finally booted into stock tablet.
I had already tried this and other methods before numerous times,and was moving on going to teach myself how to do it through command prompt, sdk,etc...
Tried the mskip toolkit one last time and it worked.
I believe I've hard-bricked my Nexus 7. I'm not stranger to flashing, etc., but something must have messed up this time. I was previously running stock Android 4.3 with TWRP recovery and my tablet took the OTA update. The update of course failed because of the root and recovery, but instead of going back to Android 4.3, it wouldn't boot past the fastboot screen (bootloader screen? with the green android).
So, planning to return to all stock, I downloaded the official Android 4.4 .tgz file and extracted it to my platform-tools folder for the Android SDK. I ran "flash-all.bat" as explained in this tutorial: http://www.androidpolice.com/2013/0...stock-using-a-full-factory-image-and-root-it/
Something must have went wrong because the screen went black and will not turn back on. When plugged into the PC, it is recognized as only an "APK" device. Sources online indicate that this is hard-bricked, as there is no "nvflash" openly available for the Nexus 7 to restore the bootloader.
1. What happened and how can others prevent this?
I think I should have flashed each partition individually (i.e. boot, recovery, system, etc) instead of "flash-all." Any idea what happened to the bootloader? Any other ideas on how to restore the bootloader?
2. What to do now?
EDIT: Apparently my device is out of warranty. Crap.
EDIT 2: Apparently I accidentally downloaded Android 4.4 (KRT16S) for the Nexus 7 Mobile (nakasig) and not for the Nexus 7 Wifi (nakasi)... Opps!
There are several Nexus 7s on ebay with cracked screens, etc. If I purchased one of these, what would I need to pull from them to fix this?
Thanks for your assistance in advance! This forum is great.
What about pressing and holding power button for more than 30 seconds?
Once it could boot and you could enter into fastboot mode, then I think you would get a chance to save it.
BTW, I did mess up when I was flashing KRT16O factory images, which was the earlier release for Kitkat.
At that time, I just used the flash-all.bat like you did. And in the second round, I still failed when following and typing the listed commands in flash-all.sh.
So I chose to use nexus toolkit after that.
Thanks for your reply.
I keep trying that, along with the various other combinations of power button and volume down and volume up. Nothing. The most that happens is when it's plugged into the PC, the PC makes the sound of something being connected and disconnected. I just tried unplugging the battery too. I'll let it charge over night and try again tomorrow.
When yours failed the first 2 times, you were still able to get into fastboot? You're right, if I can just get there then I'll be alright.
Thanks again.
I was just backtracking my steps and realized the mistake I made. I accidentally downloaded Android 4.4 (KRT16S) for the Nexus 7 Mobile (nakasig) and not for the Nexus 7 Wifi (nakasi). Major opps!!
1. Any way to recover from this brick? My gf also has a Nexus 7 (2012). Anything I can copy from that to restore mine? (if she even lets me touch it after she hears about this!)
2. There are several Nexus 7s on ebay with cracked screens, etc. If I purchased one of these, what would I need to pull from them to fix this?
No problem,bro. I think you can always get responses here at XDA though I didn't help you out.
And yes, I could still enter into Fastboot at that time.
However, I was not able to reboot my N7 using the aforementioned methods since it got stuck in Google logo.
Hence I removed the batterysilly, booted it and used the key combination to get into Fastboot. And you know the rest, used the toolkit....
My friend if u can enter fastboot then u can definately revive ur device, it is soft brick not hard brick (soft brick = software is dead) (hard brick = hardware is dead)
I do this all the time just for fun
Let me give u step by step instructions.
1. Download this tool kit
http://forum.xda-developers.com/showthread.php?t=1766475
2. Download the proper stock image for ur device (make sure u pay attention when u download the file, u definately dont want to download wrong file and then redownload the file again)
https://developers.google.com/android/nexus/images
3. Install toolkit, Select your device and don't worry about android version because u have non rit now and install the proper drivers for fastboot to work.
4. From toolkit main screen, select (softbrick/bootloop) and accept the warning.
5. Now select (Other/Browuse option) and then select (I Downlaoded a factory image myself) option then it will ask for the image that u downloaded from google website (Step 2).
6. If u have done exactly as i said then ur phone should be detected in Fastboot mode and the flashing would start and after some time phone should show loading screen (os is booting) wait for it to boot and enjoy ur stock android.
7. Enjoy.
FYI u should have enough battery (around 50%) and to enter fastboot mode u just have to boot to bootloader (restart/ power on the device while pressing volume down button) u should see the screen with bunch of numbers e.g bootloader version etc.
zamboniman87 said:
I was just backtracking my steps and realized the mistake I made. I accidentally downloaded Android 4.4 (KRT16S) for the Nexus 7 Mobile (nakasig) and not for the Nexus 7 Wifi (nakasi). Major opps!!
1. Any way to recover from this brick? My gf also has a Nexus 7 (2012). Anything I can copy from that to restore mine? (if she even lets me touch it after she hears about this!)
2. There are several Nexus 7s on ebay with cracked screens, etc. If I purchased one of these, what would I need to pull from them to fix this?
Click to expand...
Click to collapse
Hmm... there is a thread on making it unbrickable, but you have to do that ahead of time. If you were to buy a broken tablet, you'd probably need to replace the motherboard.
Sent from my Nexus 4 using XDA Premium 4 mobile app
xateeq said:
My friend if u can enter fastboot then u can definately revive ur device, it is soft brick not hard brick (soft brick = software is dead) (hard brick = hardware is dead)
Click to expand...
Click to collapse
Thanks for your help, but unfortunately I can't even enter fastboot. I can only enter APX mode, which apparently is pre-fastboot.
korockinout13 said:
Hmm... there is a thread on making it unbrickable, but you have to do that ahead of time. If you were to buy a broken tablet, you'd probably need to replace the motherboard.
Click to expand...
Click to collapse
Thanks. I saw that thread, but of course it was too late at that point. Perhaps I'll look into buying one with a cracked screen, or sell mine for parts on ebay.
Plz dont tell me u flashed wrong bootloader, plz plz plz.
zamboniman87 said:
I was just backtracking my steps and realized the mistake I made. I accidentally downloaded Android 4.4 (KRT16S) for the Nexus 7 Mobile (nakasig) and not for the Nexus 7 Wifi (nakasi). Major opps!!
Click to expand...
Click to collapse
Dammit, I just made this exact same mistake. Came here to XDA looking for help, and it seems that this may be one of those things that you simply can't recover from... sad day!
---------- Post added at 11:40 AM ---------- Previous post was at 11:09 AM ----------
SteveRiley said:
Dammit, I just made this exact same mistake. Came here to XDA looking for help, and it seems that this may be one of those things that you simply can't recover from... sad day!
Click to expand...
Click to collapse
Well, now isn't this weird... I unplugged the USB cable from my PC and then plugged it into the wall charger. After waiting a while, I was able to boot the Nexus into the "wrong" bootloader. I immediately flashed the correct one, and now am running the latest factory image.
@zamboniman87 -- I did find a thread on Android Central describing a situation in which someone erased their bootloader. The thread contains a tool that a couple folks claimed to help fix the problem. You might give that a try.
Lucky you! This gives me hope though. I'll check it out. Thanks!
xateeq said:
Plz dont tell me u flashed wrong bootloader, plz plz plz.
Click to expand...
Click to collapse
yep.... I feel dumb. haha.
xateeq said:
My friend if u can enter fastboot then u can definately revive ur device, it is soft brick not hard brick (soft brick = software is dead) (hard brick = hardware is dead)
I do this all the time just for fun
Let me give u step by step instructions.
1. Download this tool kit
http://forum.xda-developers.com/showthread.php?t=1766475
2. Download the proper stock image for ur device (make sure u pay attention when u download the file, u definately dont want to download wrong file and then redownload the file again)
https://developers.google.com/android/nexus/images
3. Install toolkit, Select your device and don't worry about android version because u have non rit now and install the proper drivers for fastboot to work.
4. From toolkit main screen, select (softbrick/bootloop) and accept the warning.
5. Now select (Other/Browuse option) and then select (I Downlaoded a factory image myself) option then it will ask for the image that u downloaded from google website (Step 2).
6. If u have done exactly as i said then ur phone should be detected in Fastboot mode and the flashing would start and after some time phone should show loading screen (os is booting) wait for it to boot and enjoy ur stock android.
7. Enjoy.
FYI u should have enough battery (around 50%) and to enter fastboot mode u just have to boot to bootloader (restart/ power on the device while pressing volume down button) u should see the screen with bunch of numbers e.g bootloader version etc.
Click to expand...
Click to collapse
I soft bricked my nexus 7 (2012), I was in Team Win Recovery and I selected Dalvik Cache, System, Cache, Data, Internal Storage and formated/deleted it , now I don't have system or recovery
img > https://www.dropbox.com/s/a7ojrr16lt8n27s/nexus bricked (3).JPG?dl=0
all I can load is fastboot mode
img> https://www.dropbox.com/s/jzmr7811w02r525/nexus bricked (2).JPG?dl=0
I will try to do all this steps that "xateeq" wroted and let you now how it went thanks!
psykg said:
I soft bricked my nexus 7 (2012), I was in Team Win Recovery and I selected Dalvik Cache, System, Cache, Data, Internal Storage and formated/deleted it , now I don't have system or recovery
img > https://www.dropbox.com/s/a7ojrr16lt8n27s/nexus bricked (3).JPG?dl=0
all I can load is fastboot mode
img> https://www.dropbox.com/s/jzmr7811w02r525/nexus bricked (2).JPG?dl=0
I will try to do all this steps that "xateeq" wroted and let you now how it went thanks!
Click to expand...
Click to collapse
hey it worked thanks!
at first there were problems with fastboot and drivers somehow usb 2.0 was a bit problematic but usb 1.0 was able to see device
after downloading many drivers (some from nexus tollkit some from web) , and after few restarts of device and bootloader, pc was able to recognize device and than I had to go 2 times with nexus tololkit >softbrick/bootloop
1st time failed
2nd time worked!
thank all!