Database Users

Help required - Bootloader only

Hi Guys/girls
I received my nexus 7 today (its lovely!) and then proceeded to attempt to root it so I can change the dpi etc.
I unlocked the bootloader using the Nexus 7 toolkit and that worked fine.
I then went to do the one click to root/flash etc and then got stuck on downloading boot.img.
After leaving it for a few hours I gave up and the nexus booted straight back into the os.
My next attempt was to root using the su binarys via fastboot. This again failed on sending the file. I also noticed that my device is locked at fastboot mode when the usb cable is plugged in, e.g the up/down doesn't work unless I unplug the cable. I have tried different cables and a different PC!
My next step was then to use the toolkit to reset back to factory incase I had screwed something up, so this deleted the bootloader etc as it should and then froze on sending the .img across.
I now have a un responsive fastboot when usb is plugged in and no recovery or bootable tablet, any hints/solutions?
Thanks

herghost said:
Hi Guys/girls
I received my nexus 7 today (its lovely!) and then proceeded to attempt to root it so I can change the dpi etc.
I unlocked the bootloader using the Nexus 7 toolkit and that worked fine.
I then went to do the one click to root/flash etc and then got stuck on downloading boot.img.
After leaving it for a few hours I gave up and the nexus booted straight back into the os.
My next attempt was to root using the su binarys via fastboot. This again failed on sending the file. I also noticed that my device is locked at fastboot mode when the usb cable is plugged in, e.g the up/down doesn't work unless I unplug the cable. I have tried different cables and a different PC!
My next step was then to use the toolkit to reset back to factory incase I had screwed something up, so this deleted the bootloader etc as it should and then froze on sending the .img across.
I now have a un responsive fastboot when usb is plugged in and no recovery or bootable tablet, any hints/solutions?
Thanks
Click to expand...
Click to collapse
yes, actually : D
download this
http://forum.xda-developers.com/showthread.php?t=1809195
if you dont have that one.
pick your device from the list.
install the drivers for your device with device unplugged
make sure the device is fully off
plug in into the computer and hold down the power and volume buttons
windows should pop up saying nexus 7 bootloader driver successfully installed and then you can use the whole fastboot menu thing without a problem and reboot to recovery or whatever.
my suggestion is to install twrp recovery project 2.x.x.x
oh yeah, its a bug with the bootloader that it freezes when you plug the usb cable into the wall or a computer without the proper drivers

jombo2323 said:
yes, actually : D
download this
http://forum.xda-developers.com/showthread.php?t=1809195
if you dont have that one.
pick your device from the list.
install the drivers for your device with device unplugged
make sure the device is fully off
plug in into the computer and hold down the power and volume buttons
windows should pop up saying nexus 7 bootloader driver successfully installed and then you can use the whole fastboot menu thing without a problem and reboot to recovery or whatever.
my suggestion is to install twrp recovery project 2.x.x.x
oh yeah, its a bug with the bootloader that it freezes when you plug the usb cable into the wall or a computer without the proper drivers
Click to expand...
Click to collapse
Thanks for your reply, thats what I did in the first place! Removed and tried again but same issue

herghost said:
Thanks for your reply, thats what I did in the first place! Removed and tried again but same issue
Click to expand...
Click to collapse
you are 100% positive you did EXACTLY what i said?

I have no idea what went wrong
That's the problem with toolkits though. People don't know what they're doing and when something goes wrong you don't know how to fix it!! I understand where toolkits come from, but they are only useful if you know what happens in the background when you click on a button.

Thread Moved
Thread belongs in Q&A. Not the Dev Forum
Post moved.
MD

I mess with several android and other devices on my notebook..
Doing so i install drivers for them and often have the exact same issue as you are having..
Do a search for a program called usbdview.. Install to your pc..
With the nexus unplugged run the program..Delete everything in the list that you do NOT HAVE plugged into your computer..Especially anything that says ADB.. OR ANDROID..
Plug in the nexus 7 refresh the list.. and delete the entries created for it..
Unplug the nexus .. reboot the pc.. Then download or use the tool kit to install the latest Adb drivers for nexus 7 ..
reboot the pc.. then plug in the nexus ..
After doing the above see if you can now use fastboot/ adb...
The above will insure its not a driver issue.Often computers get usb devices confused and causes them to hang ..
Good Luck

erica_renee said:
I mess with several android and other devices on my notebook..
Doing so i install drivers for them and often have the exact same issue as you are having..
Do a search for a program called usbdview.. Install to your pc..
With the nexus unplugged run the program..Delete everything in the list that you do NOT HAVE plugged into your computer..Especially anything that says ADB.. OR ANDROID..
Plug in the nexus 7 refresh the list.. and delete the entries created for it..
Unplug the nexus .. reboot the pc.. Then download or use the tool kit to install the latest Adb drivers for nexus 7 ..
reboot the pc.. then plug in the nexus ..
After doing the above see if you can now use fastboot/ adb...
The above will insure its not a driver issue.Often computers get usb devices confused and causes them to hang ..
Good Luck
Click to expand...
Click to collapse
You Star
Put me on the right track, my PC was basically assuming that it was my S3, in the end I removed everything with samsung in it from the registry, uninstalled all the drivers then tried again, correctly showing as a nexus and not a samsung

[Q] Google Nexus 4 bricked?

I have a Google Nexus 4, bought direct from Google, I rooted it and it was working well for a while. Then the battery started draining super fast. A friend recommended resetting, so I did and it seemed to fix it for a while. Then the battery issue came up again, so I reset again, expecting the same outcome....however, I wiped the phone completely. It turns on and displays Google, and that's it.. My computer does not recognize the phone when I plug it in, and I cannot get the USB Debugging to even be an option. Every resolution I have found for this situation needs me to enable the USB Debugging mode. Is there any other way to get all the OS files back on this phone or is it bricked?
When I plug it into the PC it tells me to look up drivers, and this is how it sees my phone: Unidentified Device USB\VID_0CF3&PID_3000&REV_0200.
It isn't recognized as a phone at all. It tells me to download Atheros Drivers.
I have searched for days trying to find the solution to this. Any help would be so very appreciated by this noob

Did you try to manually delete drivers from the device manager? Ticking the option that permanently delete the driver from PC.
And after doing this...trying Windows Update for driver installation?
PS: also try to manually flash with Fastboot all the latest Factory Image from Google....
Sent from my Nexus 4 using Tapatalk 4 Beta

thesebastian said:
Did you try to manually delete drivers from the device manager? Ticking the option that permanently delete the driver from PC.
And after doing this...trying Windows Update for driver installation?
PS: also try to manually flash with Fastboot all the latest Factory Image from Google....
Sent from my Nexus 4 using Tapatalk 4 Beta
Click to expand...
Click to collapse
Yes, I've done that, there are currently no drivers on my PC. When the phone is plugged into the PC, it tells me to find drivers because it is an unrecognized device.

MrsWhitey said:
I have a Google Nexus 4, bought direct from Google, I rooted it and it was working well for a while. Then the battery started draining super fast. A friend recommended resetting, so I did and it seemed to fix it for a while. Then the battery issue came up again, so I reset again, expecting the same outcome....however, I wiped the phone completely. It turns on and displays Google, and that's it.. My computer does not recognize the phone when I plug it in, and I cannot get the USB Debugging to even be an option. Every resolution I have found for this situation needs me to enable the USB Debugging mode. Is there any other way to get all the OS files back on this phone or is it bricked?
I have searched for days trying to find the solution to this. Any help would be so very appreciated by this noob
Click to expand...
Click to collapse
Hold volume up/down and power until it reboots into boot loader mode. Download the factory images from the Google website (search nexus stock images on Google) and plug your phone into the computer and use fastboot to flash the OS back.
Rember, as long as you can get the phone to turn on you can fix whatever other issue your having providing its software related.
To fastboot flash,
You need the android SDK, use Google to figure out how to install it but its not hard.
Run the flash-all bat found in the archive file you downloaded, or manullay flash each partition like this.
fastboot flash [partition] [.IMG name]
Sent from my Nexus 4 @1.944 GHz on Stock 4.2.2

IRX120 said:
Hold volume up/down and power until it reboots into boot loader mode. Download the factory images from the Google website (search nexus stock images on Google) and plug your phone into the computer and use fastboot to flash the OS back.
Rember, as long as you can get the phone to turn on you can fix whatever other issue your having providing its software related.
To fastboot flash,
You need the android SDK, use Google to figure out how to install it but its not hard.
Run the flash-all bat found in the archive file you downloaded, or manullay flash each partition like this.
fastboot flash [partition] [.IMG name]
Sent from my Nexus 4 @1.944 GHz on Stock 4.2.2
Click to expand...
Click to collapse
I am having trouble getting the phone to accept anything from the PC...

MrsWhitey said:
I am having trouble getting the phone to accept anything from the PC...
Click to expand...
Click to collapse
Download the toolkit and install the drivers
Sent from my Nexus 4 @1.944 GHz on Stock 4.2.2

yea download Google Nexus 4 ToolKit install drivers then you can factory restore using the toolkit to restore
i think i chose option 9 and it downloaded the need restore image

Tried it all
I have tried all those ideas and all have failed. I can never get the computer to see my device. All it says is unknown device. When I click update drivers and direct it to the sdk driver I download it still gives me no connection through fastboot or adb. I have tried selecting various general Android drivers through the update drivers screen, Found some from Google Inc. that specify Nexus 4 bootloader interface and adb interface. Nothing is working. I think I need to have a working Nexus 4 to install to correct drivers first and then I might be able to piggy back off those and use my phone to flash through fastboot or push adb. I have worked with both command lines with reasonable success before rooting samsung tablets and phones and htc's. I am familiar with the process and have read numerous ideas none of which seem to work in this case. Made it all the way to Google search page 12. Anyone know a way to force install the Nexus 4 drivers without having a working phone present? I am thinking I just need to go buy a new one and return it after I plug it in to install drivers. Don't want to have to pay the re-stock fee though. Any other ideas are very welcome.
And I have tried to use the toolkit as well and it does nothing either. I have the stock rom ready to go just need a way to get it onto the phone.

[Q] USB and recovery problems after OTA upgrade to 4.3

I took the OTA to 4.3 on my Nexus 7. It was previously unlocked and rooted, but had no kernels, etc changed. After the update ran, I lost root as expected, however, in trying to get it back, I've discovered I'm having a couple of other issues.
First, the device is no longer working properly via USB on my PCs. On both my Win 7 and Win 8 PCs, the device won't properly connect to where I can browse files or anything else. On the Win 8 computer, I see a Nexus 7 device in Device manager, but drivers won't install. I downloaded the drivers from the Asus site, but trying to manually install them doesn't work on the Win 7 machine, and on the Win 8 machine, they install but don't seem to be working with the Nexus 7 as it still shows a problem in Device Manager.
The tablet also will not boot into recovery mode. I can power it up into fastboot mode, but if I select "Recovery Mode" and hit the power button, I just got the Android with the red triangle for a few minutes before it boots back into the OS. After doing some searching, I saw where you might need to have it plugged into a PC to get it to go into recovery, but that doesn't work, either (might be tied to the USB problem).
Ideas?

Did you turn on developer options, and USB debugging? Have you tried USB connection type PTP instead of MTP?
If you have the stock recovery, the red triangle and Android are normal. You can bring up a blue options menu by pressing the power and volume up buttons from the red triangle Android.
Sent from my rooted Nexus 7 @ 49.4 mpg

exglynco said:
Did you turn on developer options, and USB debugging?
Sent from my rooted Nexus 7 @ 49.4 mpg
Click to expand...
Click to collapse
Yes.

Try another driver source. Wugfresh's installation is a lot tougher than Skipsoft's, but try the other guy 's system.
Sent from my rooted Nexus 7 @ 49.4 mpg

exglynco said:
Try another driver source. Wugfresh's installation is a lot tougher than Skipsoft's, but try the other guy 's system.
Sent from my rooted Nexus 7 @ 49.4 mpg
Click to expand...
Click to collapse
I was using the stock drivers off the Asus page. I'll look around for the two you mention. I assume they're posted on here somewhere.

And about the recovery just try flashing another recovery from fastboot
Code:
fastboot flash recovery recovery.img
Sent from my Nexus 7

Red Devil said:
And about the recovery just try flashing another recovery from fastboot
Code:
fastboot flash recovery recovery.img
Sent from my Nexus 7
Click to expand...
Click to collapse
Without USB access? That's my dilemma.

OK, I'm getting closer. I got TWRP installed and rerooted it. I had to do the "Revoke USB debugging authorizations" on the Dev Options screen. Then it would work via ADB.
Still not browsing files yet on my desktop, but at least I know I'm talking to it. So now I'll play with the driver installation a bit.
EDIT: Well, drivers reinstalled for about the 4th time, and it's still not allowing me to browse files from my desktop. Galaxy S4 works fine as soon as I plug it in, even if I also uninstall it's drivers. Ideas? I obviously have it working over USB because I can give it commands and reboot it via the PC.

OK, try this one. Plug in your tablet to pc, go to hardware manager, find your Android Device then choose Uninstall (choose Remove all drivers for this device), unplug and plug in your tablet again. Your Windows should discover few new devices (mine has discovered three) and download drivers for them then you should see Android ADB Interface in Android Devices and Nexus 7 in Mobile Devices.
--edit--
I've solved my issue
http://forum.xda-developers.com/showthread.php?p=44322739#post44322739

Already been done that road multiple times.

have the same problem except one thing: no one 3 computers don`t detect my nexus. have no reaction in device manager, on connection nexus as mtp/debug/fastboot. Only usb-otg works.

xxut said:
have the same problem except one thing: no one 3 computers don`t detect my nexus. have no reaction in device manager, on connection nexus as mtp/debug/fastboot. Only usb-otg works.
Click to expand...
Click to collapse
After you plug your nexus in have you unlocked the screen to see if it is asking you to authorize the tablet?
What other steps have you taken? Have you installed proper drivers? Have you manually chosen to update drivers with the sdk drivers if in device manager is showing the nexus? Have you tried the drivers from Asus?
Sent from my Nexus 7 using Tapatalk 4 Beta

SlowCobra96 said:
After you plug your nexus in have you unlocked the screen to see if it is asking you to authorize the tablet?
What other steps have you taken? Have you installed proper drivers? Have you manually chosen to update drivers with the sdk drivers if in device manager is showing the nexus? Have you tried the drivers from Asus?
Sent from my Nexus 7 using Tapatalk 4 Beta
Click to expand...
Click to collapse
I personally did all of those things. After having the Nexus "forget" all the other PC authorizations on the dev screen, I finally got it to accept ADB commands, just not to properly install drivers that would allow me to browse files like it had done on 4.2.

SlowCobra96 said:
After you plug your nexus in have you unlocked the screen to see if it is asking you to authorize the tablet?
What other steps have you taken? Have you installed proper drivers? Have you manually chosen to update drivers with the sdk drivers if in device manager is showing the nexus? Have you tried the drivers from Asus?
Sent from my Nexus 7 using Tapatalk 4 Beta
Click to expand...
Click to collapse
Nexus doesn`t appears in device manager. At all. It starts to charage, but no reaction in device manager, no any reaction(except charging) at nexus. On computer it looks like i didn`t connect anything. I`ve trying to intall drivers as legasy hardware, but nothing changes. Sorry for my english.

xxut said:
Nexus doesn`t appears in device manager. At all. It starts to charage, but no reaction in device manager, no any reaction(except charging) at nexus. On computer it looks like i didn`t connect anything. I`ve trying to intall drivers as legasy hardware, but nothing changes. Sorry for my english.
Click to expand...
Click to collapse
Try turning off usb debugging. My tablet cannot connect to pc but with usb debugging off it at least recognises tablet as a media device and this enables me to view its files
.but still the problem of not being able to root

Bricked Device

I had a rooted 4.3 stock image on my N10. Got the notification about the downloaded update for 4.4
It did the update through TWRP (which was weird to me) and finished, restarts and gets stuck on the boot loading screen.
So I went into recovery, and cleared cache, no luck, then complete factory reset, no luck, then I added "System" to that wipe, not knowing what it was an now there is no OS installed.
I installed the Nexus 10 Toolkit (Unified Toolkit) and install the USB drivers, but my computer is not seeing my device..
Help?

As long as you can get to the bootloader, you can reflash a stock image. Easiest way is with wugfresh nexus root toolkit. It will walk you through the driver installation and the various image downloads.

That did not work.
The computer is not seeing my device. Drivers are installed, not seeing it, it's in the proper Boot mode.

I followed the mode that said I didn't need debugging enabled, still nothing.

bmancell said:
I followed the mode that said I didn't need debugging enabled, still nothing.
Click to expand...
Click to collapse
I would recommend uninstalling the USB drivers you installed with the toolkit and manually installing the Google USB drivers attached to this post. After you have installed the USB drivers I would recommend manually booting into your devices bootloader by simultaneously holding down the power button + volume up button + volume down button. Once you are in bootloader mode I would recommend download this Android 4.4 KitKat Factory Image and flashing it to your device in order to restore things to a working order. Let me know if you still have questions I'll be happy to help you out.

And want explain to me how I copy that file to my device when the computer can't see it?

bmancell said:
And want explain to me how I copy that file to my device when the computer can't see it?
Click to expand...
Click to collapse
Check out my previous post and see if those steps will allow your computer to see your device, and let me know how that goes for you.

Ok, I unziped the folder, got the tablet in bootloader mode, which I already said I tried, nothing.

Weird thing, I plugged the tablet into my other computer, it makes the noise for Windows 8.1 that you hear when you plug a USB device in, but there is no notifcation, nothing in device manager, nothing. Just the sound .

bmancell said:
Weird thing, I plugged the tablet into my other computer, it makes the noise for Windows 8.1 that you hear when you plug a USB device in, but there is no notification, nothing in device manager, nothing. Just the sound .
Click to expand...
Click to collapse
I just want to re-state everything to make sure anyone can understand.
This was a Nexus 10 rooted 4.3 Stock. I got the 4.4 update, it finished without issues, but got the boot loop issue.
I cleared cache, factory reset and eventually the system without luck, which left the tablet without an OS (bootloader or recovery only options).
My systems can not detect the tablet, I have installed, re-installed, tried two different toolkits and no luck.
I can't believe it's an actual brick that can't be fixed? Anyone?

Its definitely NOT your tablet. I had similar issues when rooting a Kindle and it was an issue with the PC's USB drivers. If you search the forums for USB / ADB drivers you will find a detailed discussion on how to delete existing drivers (its a process) and update new drivers.

sojthumper said:
Its definitely NOT your tablet. I had similar issues when rooting a Kindle and it was an issue with the PC's USB drivers. If you search the forums for USB / ADB drivers you will find a detailed discussion on how to delete existing drivers (its a process) and update new drivers.
Click to expand...
Click to collapse
Did you read? I have installed/reinstalled the drivers 3 times.

bmancell said:
Did you read? I have installed/reinstalled the drivers 3 times.
Click to expand...
Click to collapse
I also tried a third computer, and another cable. It will charge from a computer, nothing else.

I went through the same experience; it *was* the drivers. If you're using the wugfresh toolkit, it gives at least three options for driver installation. In my case only the drivers from pdanet worked. I've had similar issues in the past with my N7; in that case only the pdanet drivers worked on one computer, and only the Koush drivers worked on a different computer -- both Win 7 by the way; I have no idea why.
I did have to go through the whole procedure described in the toolkit to manually unistall old drivers and manually remove references to the device before reinstalling the driver.

You can get into TWRP, correct? Do you have a USB-OTG cable? You could download a ROM, put it on a flash drive then install it directly from the USB drive. There should be some flashable stock roms, or if you have an old Nandroid backup on your computer (always a good idea to have) you could restore it.
Sent from my Nexus 7 using xda app-developers app

gc84245 said:
You can get into TWRP, correct? Do you have a USB-OTG cable? You could download a ROM, put it on a flash drive then install it directly from the USB drive. There should be some flashable stock roms, or if you have an old Nandroid backup on your computer (always a good idea to have) you could restore it.
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
Don't know what a USB-OTG cable is, and not sure how you'd connect a flash drive, but...
I tried one more computer, this time it was a computer with Windows 7 one it. Detected the tablet right away.
So, why the heck does Windows 8 (8.1 to be exact) not allow my tablet to be seen (im sure with the OS on, and booted in, it will)./

tjupille said:
I went through the same experience; it *was* the drivers. If you're using the wugfresh toolkit, it gives at least three options for driver installation. In my case only the drivers from pdanet worked. I've had similar issues in the past with my N7; in that case only the pdanet drivers worked on one computer, and only the Koush drivers worked on a different computer -- both Win 7 by the way; I have no idea why.
I did have to go through the whole procedure described in the toolkit to manually unistall old drivers and manually remove references to the device before reinstalling the driver.
Click to expand...
Click to collapse
This must be why my Windows 8 machines don't work, but I dont remember seeing other driver options, only the one, will keep in mind in the future.

Sounds like the problem is solved, but I highly recommend getting a USB-OTG cable anyways. Go to Amazon and search for "USB-OTG". You can connect flash drives and external hard drives to your tablet. I got mine for $2.
Sent from my Nexus 7 using xda app-developers app

Nexus 6p stuck in twrp with no os and no connection to pc

i made the boneheaded mistake of deleting everything off my phone in twrp (3.2.1-0) and ive had little success in trying to recover it.
1. my pc will not recognize it when its plugged in, this was also an issue when it had an os on it. ive tried to install the google usb drivers as well as the hisuite drivers with no success
2. i bought a usb otg adapter so i could possibly push the new os through there but when ever i try i get 0mb when trying to select the storage in the mount section of twrp. ive also tried reformatting the usb multiple times but that didnt work either.
3. there is no connectivity while in fastboot as well as adb
I'm caught in a tight situation and don't have the means to buy a new phone if anyone could help me out i would greatly appreciate it

shpadza said:
i made the boneheaded mistake of deleting everything off my phone in twrp (3.2.1-0) and ive had little success in trying to recover it.
1. my pc will not recognize it when its plugged in, this was also an issue when it had an os on it. ive tried to install the google usb drivers as well as the hisuite drivers with no success
2. i bought a usb otg adapter so i could possibly push the new os through there but when ever i try i get 0mb when trying to select the storage in the mount section of twrp. ive also tried reformatting the usb multiple times but that didnt work either.
3. there is no connectivity while in fastboot as well as adb
I'm caught in a tight situation and don't have the means to buy a new phone if anyone could help me out i would greatly appreciate it
Click to expand...
Click to collapse
Powerdown your phone and boot to bootloader by pressing powerkey and holding vol- then connect to your computer you should see the Nexus 6p on your pc and. from your computer download any rom of your like,gapps,root optional and copy it to your internal storage. Then just flash.

Gearswar said:
Powerdown your phone and boot to bootloader by pressing powerkey and holding vol- then connect to your computer you should see the Nexus 6p on your pc and. from your computer download any rom of your like,gapps,root optional and copy it to your internal storage. Then just flash.
Click to expand...
Click to collapse
that doesnt work either. i have all of the appropriate drivers and still nothing.

That could be your pc. Try a different port or even better another pc.