Database Users

Need Help Unbricking Nexus 7

The problem is I can't unbrick and restore my nexus to stock rom.
I can't boot the device and I'm only able to boot to bootloader. However, my computer doesn't recognize the nexus. It keeps saying Window cannot recognize it whenever I plug my tablet to the computer in bootloader. I tried uninstall and reinstall driver several times, but none of them seems to work . ----> That means I can't even use adb to restore the phone simply because my tablet is not recognized in window.
Is there anyway to fix this problem? I really need your helps as soon as possible.
Thank you for reading !

Get to bootloader. Then use Wugs toolkit, open advanced options. On the very left is something like "temp boot to recovery". Once that boots it to recovery, ADB should work. It did for me. I was in some trouble last night and got out by this. If you know how to use adb/fastboot commands, you should be good. And I uninstalled my drivers and when I plugged it in the device automagically reloaded the drivers. But you have to do it a few times. Had to do it in bootloader, recovery, and another point. Anytime it asks to load drivers/etc do it.

I can't boot to recovery through Wug Tool Kit. It keeps saying Fastboot device was not found >"<
By the way, whenever I connnected my device to computer, the bootloader freezes :|

What were you doing before you go into this situation?

I was on Glazed Jelly Bean rom and wanted to go back to stock rom. I used nexus 7 toolkit to do all the work for me. However, there was something wrong like the toolkit didnt extract the stock img right or something like that, my tablet got bootloop, and what happened next was what i had been telling you guys.

Best bet is if somehow you could get into recovery or get adb working. Might want to uninstall drivers and install again and reboot computer. I would suggest using this thread and flash things manually back to stock. http://forum.xda-developers.com/showthread.php?t=1907796 but you would need adb working.
When you power off device and use volume and power can you get it to go into boot loader then plugged into computer try to get to recovery or adb.

Consider deleting the drivers from Windows after uninstalling them otherwise Windows may try to be "clever" and reinstall the bad driver when you plug the device in. The Nexus 7 drivers from Asus can be downloaded here and Google's USB drivers are here

Travisdroidx2 said:
Best bet is if somehow you could get into recovery or get adb working. Might want to uninstall drivers and install again and reboot computer. I would suggest using this thread and flash things manually back to stock. http://forum.xda-developers.com/showthread.php?t=1907796 but you would need adb working.
When you power off device and use volume and power can you get it to go into boot loader then plugged into computer try to get to recovery or adb.
Click to expand...
Click to collapse
What if I couldn't get adb working?

I tried everything and windows still doesn't recognize my device in fastboot

Have you tried Nexus Root Toolkit v .1.5.4?

kiddo94 said:
I tried everything and windows still doesn't recognize my device in fastboot
Click to expand...
Click to collapse
try connecting to the usb port at the back of your computer

Paranoid flashed with the bricked kernel did this to me once right after the move to 4.1.2. Even with a full wipe and all the usual safety precautions it just stuck on bootloop forever and wouldn't let me in. I chalked it up as that's what I get for being the guy that's never satisfied with stock. I was unable to get my nexus7 fixed. I sent you a suggestion on pm though.

Never mind everyone. Thank you so much for your help.
I tried install the nexus 7's driver on another computer and it recognized my device in bootloader mode, and restore everything back to stock now. Thank you so much!!!!

Mine did that to the first time I tried. After I got it to work, the permissions were all messed up and I could not get it to download anything off the web and I was getting a playstore error 90% of the time as well. I finally just wiped everything on my tablet, installed the stock rom via N7 toolkit, then reflashed smooth rom, and all is working now. It may have been a bug with the older version of N7 toolkit, as I updated it before I reran everything.

Semi-Bricked....can you help?

Hi, been lurking around here for a good while now....fantastic website website and I've learned so much but now I have an issue.
For what ever reason my nexus 7 will not boot, I can get into fastboot and have been following the guides to do a full factory restore through fastboot. Everything goes fine until is comes to "Sending System" then just.....stops. I have used the nexus toolkit and also the official sdk drivers and fastboot contained there. I only have an old laptop as my main pc for some reason does not recognise the nexus.
I have tried alternative USB cable too.
Does anyone have any other advice.
Also the device is complete stock no custom rom has been installed so no custom recovery available.
I really appreciate any help.
Cheers!

Okay well ive managed to get it back alive!
used a new laptop and usb cable and it all seems to be fine now!
Now back to my original issue...windows 8 is pissing me around and wont recognise the bloody thing!
Any ideas?

Try a search, shouldn't be hard to find what others have done with Windows 8 difficulties...

singlemanriot said:
Okay well ive managed to get it back alive!
used a new laptop and usb cable and it all seems to be fine now!
Now back to my original issue...windows 8 is pissing me around and wont recognise the bloody thing!
Any ideas?
Click to expand...
Click to collapse
Go to Device Manager, show hidden devices and uninstall any Android or ADB related devices that you have. Disable USB debugging on your Nexus, then plug it into your PC and see if it's recognized. If it is, then re- enable USB debugging, then go to Device Manager and reinstall the Google USB drivers to get ADB support back.

Thanks for the advice, first thing I did was try searching....I have tried countless methods suggested but nothing works its like windows cant find the drivers. In the device manger its recognised but no diver installs no matter what I do. If I force the manual driver install it fails!? I have tried the Naked drivers, the SDK even making sure the media components of windows are installed properly

Fastboot trouble windows 8 x64

Hi guys,
I want to go back to stock since 4.4 is coming. However, when I try to flash the stock rom+ with Nexus Root Toolkit 1.7.3, I get stuck at the whole fastboot part. Fastboot IS working on my Nexus, but the drivers cause a lot of trouble. Installing the drivers when my device is running normally ( so no fastboot mode or whatsoever) works fine.
I have followed the Full driver installation guide where I tried options 1 till 4 but they all get stuck at the point where my device reboots into fastboot mode. At this point, my computer doesn't recognize my device and gives me an error. My nexus is shown in the device manager as unknown device and updating the drivers manually by redirecting my computer to the NRT drivers does not work. It says it cannot find drivers for the device. Does anyone know what I might have done wrong?
Or is it possible to flash a stock rom through twrp? like this one? http://forum.xda-developers.com/showthread.php?t=2376881

TL;DR: use a machine with Windows 7 installed. Or boot ubuntu from a usb stick.
I've researched a lot about this, I had to downgrade my dad's phone with Flashtool (for Xperias), and after trying about every tutorial I encountered (removing drivers, installing different drivers, changing ports, disabling driver signature verification in Windows, I installed android studio, adb separately, running everything in administrator mode), I remembered I have a W7 machine on the other desk, it worked like a charm.
W8 (or 8.1, it's the same thing) is bad for flashing, I don't know when they're going to fix it.

issak42 said:
TL;DR: use a machine with Windows 7 installed. Or boot ubuntu from a usb stick.
I've researched a lot about this, I had to downgrade my dad's phone with Flashtool (for Xperias), and after trying about every tutorial I encountered (removing drivers, installing different drivers, changing ports, disabling driver signature verification in Windows, I installed android studio, adb separately, running everything in administrator mode), I remembered I have a W7 machine on the other desk, it worked like a charm.
W8 (or 8.1, it's the same thing) is bad for flashing, I don't know when they're going to fix it.
Click to expand...
Click to collapse
Yeah, I tried the same things you did, including disabling driver signature verification but it won't work. I'll try a windows 7 machine.
Thanks for your answer!

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

Huge mistake

Hey guys ,let's get straight. I'm totally dumb.
After flashing Lollipop factory img which reseted my internal storage (made a backup on PC), today I decided to try AOSP. Downloaded with my phone, flashed it. But the file was corrupted (bad download or something). Results : I only had that rom on my internal storage, my phone won't boot. I thought I could use NRT, although it as always worked fine, now it keeps telling me "adb device not found", "no fastboot devices". So, actually I can't do anything and I can't see what can I do.. already tried reinstalling drivers, but windows isn't even showing my nexus 4 on device manager
Looks like I need help, and sleep too..

Pedrau said:
Hey guys ,let's get straight. I'm totally dumb.
After flashing Lollipop factory img which reseted my internal storage (made a backup on PC), today I decided to try AOSP. Downloaded with my phone, flashed it. But the file was corrupted (bad download or something). Results : I only had that rom on my internal storage, my phone won't boot. I thought I could use NRT, although it as always worked fine, now it keeps telling me "adb device not found", "no fastboot devices". So, actually I can't do anything and I can't see what can I do.. already tried reinstalling drivers, but windows isn't even showing my nexus 4 on device manager
Looks like I need help, and sleep too..
Click to expand...
Click to collapse
Hmm can you get at least to the bootloader menu. If you can, there's still hope. At this time, you're better off using the manual commands rather than the NRT (the NRT use a set of pre-configured scripts and doesn't always end up where you would like to) Have you tried to also plug your device inside another USB port?

zaclimon said:
Hmm can you get at least to the bootloader menu. If you can, there's still hope. At this time, you're better off using the manual commands rather than the NRT (the NRT use a set of pre-configured scripts and doesn't always end up where you would like to) Have you tried to also plug your device inside another USB port?
Click to expand...
Click to collapse
Yes I can acces to bootloader and TRWP. Tried another USB port, another USB cable, using manual commands it says " <waiting for device>" and nothing happen..

What drivers are you using. I use the Google usb driver available here
http://developer.android.com/sdk/win-usb.html
How to install these drivers here
http://developer.android.com/tools/extras/oem-usb.html#InstallingDriver
You also need the android platform tools installed on your pc for adb and fast boot commands to work. I use this installer
http://forum.xda-developers.com/showthread.php?t=2317790
Make sure you have completed these steps on your PC before you connect it to your nexus.

venu123 said:
What drivers are you using. I use the Google usb driver available here
http://developer.android.com/sdk/win-usb.html
How to install these drivers here
http://developer.android.com/tools/extras/oem-usb.html#InstallingDriver
You also need the android platform tools installed on your pc for adb and fast boot commands to work. I use this installer
http://forum.xda-developers.com/showthread.php?t=2317790
Make sure you have completed these steps on your PC before you connect it to your nexus.
Click to expand...
Click to collapse
Thanks buddy , but my drivers were fine before all this. And now i can't reinstall it that way since my nexus isn't even showing up on device manager, I used another method from NRT. Gonna test on w7..
EDIT: Problem solved using windows 7. There seems to have problem with drivers on windows 8.1

Yes, in windows 8 you need to disable driver signature enforcement. In windows 7 no problem.

venu123 said:
Yes, in windows 8 you need to disable driver signature enforcement. In windows 7 no problem.
Click to expand...
Click to collapse
I didn't have to on Windows 8.1.