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2012 Nexus 7 Discussion Forums (1st Generation) => Nexus 7 Help => Topic started by: birdastrompgman on November 19, 2012, 12:45:36 AM

Title: Won't boot, won't go to bootloader
Post by: birdastrompgman on November 19, 2012, 12:45:36 AM

I couldn't leave well enough alone.  Had my N7 running Paranoid Android 2.54, but decided to do a restore to an earlier setup of the same ROM that I liked.  The restore failed while writing the system.

My N7 wouldn't boot into Android, and won't boot to the bootloader.  In fact, I can't turn it off.  It always goes back to the first Google screen with the unlocked bootloader icon.

While it was hanging in the boot process, I was able to get an adb connection through the Nexus 7 Toolkit and get it to the bootloader via N7T, as I had it set up for USB debugging, so I tried to flash CWM touch, TWRP, and stock recoveries.  They all failed.  So I tried flashing the stock 4.1.2 OS, and it failed erasing boot, cache, recovery, system, and userdata.  It also failed writing the bootloader, and rebooting to the bootloader.  Now it isn't responding to the N7T's command to reboot. 

Help!
(http://i1179.photobucket.com/albums/x397/BestmpgxB/2012/bootwritefailed.jpg)

Update: I'm still able to get the unlocked Google 'start of boot' screen, and the N7Toolkit can get an adb connection.  What can I do?  The following screen capture shows my menu options.  The only ones I'll be able to run are those that can run when my N7 is in fastboot (the N7Toolkit can get me there).  When in Fastboot, it's unresponsive to the volume buttons.

I'm guessing I need to flash a boot.img or bootloader.img file, but it has already failed on bootloader-grouper-3.34.img
(http://i1179.photobucket.com/albums/x397/BestmpgxB/2012/N7ToolkitMenu.jpg)

Title: Re: Won't boot, won't go to bootloader
Post by: S.Prime on November 19, 2012, 03:57:32 AM

Bird, go to the Google site that has the image files for the different Android versions for Nexus devices and you will find a link to instructions for reloading the OS with abd and fastboot commands. Hopefully that will get you back on track. Keep us posted.

IT Service Professional - I Just Want a Device to Be Productive

Title: Re: Won't boot, won't go to bootloader
Post by: birdastrompgman on November 19, 2012, 10:55:20 AM

Got it working, Prime.  Thanks! 

I tried flashing the OEM 4.1.2 ROM again, using the N7Toolkit, and it worked.  I suspect that my attempts to power it down last night cleared the RAM of whatever was conflicting with the boot partition.