Does not install bootloader for Nexus 7 (2012)!!!!!! help!

[VSFe]

I wanted to install stock rom, So I reboot fastboot, and connected device, and installed file.
However, When flashing bootloader, it does not proceed any more.
So, my tablet was brick. What can I do?

 

[Paul627g]

Re: Dose not install bootloader!!!!!! help!

Hello,

Can I ask how you were going about flashing the factory images? Did you use a toolkit or doing it manually via command prompt and fastboot?

 

[Louis6507]

Re: Dose not install bootloader!!!!!! help!

This is almost the same problem I'm having. I'm using WUG. I have a Nexus 7 2012 HSPA. I was using 4.2.2 and was trying to flash stock + unroot to 4.4.2 using "NAKASIG-TILAPIA: Android 4.4.2 - Build: KOT49H"

Should I attempt with the option to "Force Flash Mode"?

Here is my log/error:

Flash Stock + Unroot...
 ------------------------------------------------------------------


erasing 'boot'...
OKAY [  0.024s]
finished. total time: 0.025s
******** Did you mean to fastboot format this partition?
erasing 'cache'...
OKAY [  0.090s]
finished. total time: 0.090s
erasing 'recovery'...
OKAY [  0.025s]
finished. total time: 0.025s
******** Did you mean to fastboot format this partition?
erasing 'system'...
OKAY [  0.116s]
finished. total time: 0.116s
******** Did you mean to fastboot format this partition?
erasing 'userdata'...
OKAY [  4.941s]
finished. total time: 4.941s

sending 'bootloader' (3911 KB)...
OKAY [  0.487s]
writing 'bootloader'...
FAILED (remote: (InvalidState))
finished. total time: 0.724s
rebooting into bootloader...
OKAY [  0.020s]
finished. total time: 0.020s

sending 'radio' (16384 KB)...
OKAY [  1.971s]
writing 'radio'...
OKAY [  1.757s]
finished. total time: 3.728s
rebooting into bootloader...
OKAY [  0.020s]
finished. total time: 0.020s

archive does not contain 'boot.sig'
archive does not contain 'recovery.sig'
archive does not contain 'system.sig'
--------------------------------------------
Bootloader Version...: 4.18
Baseband Version.....: 1231_0.18.0_0409
Serial Number........: 015d41d859481419
--------------------------------------------
checking product...
OKAY [  0.040s]
checking version-bootloader...
FAILED

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

finished. total time: 0.200s

UPDATE: I think I have discovered the problem of having the wrong bootloader img in the update file. I have found the "correct/fixed" bootloader for version 4.23. So, should I just copy and replace the bootloader in C:\Program Files\WugFresh Development\data\Factory_Images\nakasig-kot49h-factory-83d93b5f then flash again?

 

[Louis6507]

Re: Dose not install bootloader!!!!!! help!

VSFe, if you are using WUG's Nexus Root Toolkit, I can help you. I found a way to solve this problem thanks to help here and over at XDA. Just let me know. ^_^

The problem is the bootloader img file included from Google is corrupted. I replaced the "working" version from XDA into the folders for WUG's NRT and it worked fine.

 

[VSFe]

Re: Dose not install bootloader!!!!!! help!

I just downloaded factory image file in google, and used flash-all.bat.
I have used this, But suddenly not working.

 

[Louis6507]

Re: Dose not install bootloader!!!!!! help!

Hmm...To be honest. I've only used WUG's. I've never used flash-all.bat But, your problem sounds identical to mine which is apparently the same problem many others have had. The "bootloader-tilapia-4.23.img" file that comes directly from Google is corrupted. So, I downloaded one that was recommended and replaced it with the one that was included from Google.

Is your 2012 WiFi or 3G? Download the correct one from Ged.'s post (http://forums.androidcentral.com/google-nexus-7-2012-rooting-roms-hacks/191477-guide-nexus-7-factory-image-restore-16.html#post3398155) and flash that one. It should solve your problem.