Can I get some help gettin gmy bricked Nexus 7 (2012) to flash a bootloader?

[Darin Martin]

Bricked Nexus 7 (2012) won't flash bootloader

I've been working on this one all day.. I've cleared and retried everything a couple dozen times and its not working.
Hope someone can point out my problem.
I had 5.0.2 Lollipop installed and got tired of the slowness so I thought I'd flash back to an older version. However now its bricked and gives booting failed in the upper left corner.

Any time I try to flash the bootloader I get an error saying remote (Invalid State). I tried googling this and found that there has been a problem with the bootloader and to use an older version of the bootloader. I tried this and it still failed. I'm pasting in the latest attempt. Hopefully someone can tell me where I'm going wrong or point me at a file that I've missed:

C:\Users\Darin\Downloads\fastboot_adb(1.0.32)_071114_r21>flash-all.bat
...
(bootloader) Bootloader is already unlocked
OKAY [  0.016s]
finished. total time: 0.016s
erasing 'boot'...
OKAY [  0.016s]
finished. total time: 0.016s
******** Did you mean to fastboot format this partition?
erasing 'cache'...
OKAY [  0.078s]
finished. total time: 0.078s
erasing 'recovery'...
OKAY [  0.016s]
finished. total time: 0.031s
******** Did you mean to fastboot format this partition?
erasing 'system'...
OKAY [  0.109s]
finished. total time: 0.109s
******** Did you mean to fastboot format this partition?
erasing 'userdata'...
OKAY [  2.269s]
finished. total time: 2.284s
sending 'bootloader' (2100 KB)...
OKAY [  1.030s]
writing 'bootloader'...
FAILED (remote: (InvalidState))
finished. total time: 1.186s
rebooting into bootloader...
OKAY [  0.016s]
finished. total time: 0.016s
archive does not contain 'boot.sig'
archive does not contain 'recovery.sig'
archive does not contain 'system.sig'
archive does not contain 'vendor.img'
Creating filesystem with parameters:
    Size: 14569963520
    Block size: 4096
    Blocks per group: 32768
    Inodes per group: 8160
    Inode size: 256
    Journal blocks: 32768
    Label:
    Blocks: 3557120
    Block groups: 109
    Reserved block group size: 871
Created filesystem with 11/889440 inodes and 97309/3557120 blocks
Creating filesystem with parameters:
    Size: 464519168
    Block size: 4096
    Blocks per group: 32768
    Inodes per group: 7088
    Inode size: 256
    Journal blocks: 1772
    Label:
    Blocks: 113408
    Block groups: 4
    Reserved block group size: 31
Created filesystem with 11/28352 inodes and 3654/113408 blocks
--------------------------------------------
Bootloader Version...: 4.18
Baseband Version.....: N/A
Serial Number........: 015d2d42b243fa0c
--------------------------------------------
checking product...
OKAY [  0.031s]
checking version-bootloader...
FAILED

Device version-bootloader is '4.18'.
Update requires '4.23'.

finished. total time: 0.187s
Press any key to exit...

Any suggestions or ideas would be appreciated. I've tried factory images from 4.1.2 to 4.4 on the Google developers site.

Thanks!

 

[Rukbat]

Re: Bricked Nexus 7 (2012) won't flash bootloader

Try a 5.0.2 image. If that works it means that you can't "downdate" that device past a major version number (IOW, from 5.0.2 to 5.0 is fine, but 5 to 4 isn't.) I don't know Nexus and don't have that one to play with, so I can't be sure, but some devices just can't go back past the major version number.

If not, and no one here has an answer, head over to Nexus 7 - XDA Forums and ask for help - those people have the device, and many of them are ROM developers, so they've bricked their many times and know how to get it working again. (I run a Note 3 - I was playing with ROMs last week and probably bricked the phone about a dozen times. It wasn't a big deal. But you can't use the Samsung tools to unbrick a Nexus. The developers at XDA will have links for ROM images, programs, techniques - to them, unbricking a device is a boring little thing you do when you make a mistake.)

 

[ETPhoneHomeT]

Re: Bricked Nexus 7 (2012) won't flash bootloader

Maybe try Wugfresh Nexus Root Toolkit and when restoring factory image, use the Soft Bricked/Bootloop option under Current Status?

Posted via the Android Central App

 

[Darin Martin]

Re: Bricked Nexus 7 (2012) won't flash bootloader

I tried the wugfresh toolkit. For some reason it woldn't see my N7. No matter what I tried it would not see that it was connected even though ADB and fastboot worked fine from the command prompt.

I think I managed to fix it. I noticed the image for 5.1.0 out there today, downloaded it and supposedly all flashed OK.. Its on its first boot right now and I'm starting to see signs of life. I just wish I could get it to go back to 4.4.4 or older. Lollipop is really slow.

Thanks for the pointers everyone.

 

[systemofadown1]

Re: Bricked Nexus 7 (2012) won't flash bootloader

the Nexus 7 is almost impossible to brick completely. Wugs toolkit is always the way to go

 

[Darin Martin]

Re: Bricked Nexus 7 (2012) won't flash bootloader

Yeah, I've found out how hard it is to truly brick these past few days.

The Wugs toolkit just would not work for me.
Another weird thing. The flash-all.bat didn't entirely fix it. It would just hang at the swirly screen and not go any further.
I ended up wiping everything again and doing the fastboot commands by hand from the command prompt. This time I tried flashing JWR66Y by hand and this time it flashed, and right now I've been able to get booted up and all my apps are being downloaded .. So, more strangenes.. I'm just glad it's back from the un-dead. It may be old but there's no other tablet I'd ever want to have.

Thanks to everyone for all the pointers. I appreciate it.

 

[ETPhoneHomeT]

Re: Bricked Nexus 7 (2012) won't flash bootloader

I tried the wugfresh toolkit. For some reason it woldn't see my N7. No matter what I tried it would not see that it was connected even though ADB and fastboot worked fine from the command prompt.

Did you install the drivers?