Database Users

N7 stick on bootloader, no cache, cant unlock

Hi.
I have in the past had to come crying on here for you miracle workers to help me so im here again
The nexus 7 unit was running well. I had a few issues with random shut downs and was getting concerned.
what i ultimately wish for is a back to stock factory fresh install nexus 7
after searches found a reset may help
got into bootloader
into recovery and tried a factory reset
the unit stopped at wiping /data
a press of buttons changed this to the android dude with a swirling tummy. Left this to no joy
Started again. this time cleared cache. This had the same error. (just sat there)
Then i got an error indicated the E:failed to mount /cache (invalid argument)
basically E: cant be accessed
So, i decided to look a bit further and unlocking the unit seemed to be the only way i was going to fix this....
problem is it wont let me unlock my bootloader
i get
C:\google>fastboot oem unlock
...
(bootloader) erasing userdata...
(bootloader) erasing userdata done
(bootloader) erasing cache...
(bootloader) erasing cache done
(bootloader) unlocking...
FAILED (remote: (Unknown error code))
finished. total time: 1.614s
the unit is still locked
i now have a nexus 7 that will boot into bootloader, recovery
so i can adb sideload, i can get to fastboot
i have tried flash from fastboot etc
i pray someone can help
i have tried formatting the cache to rebuild???
here is what i got
C:\google>fastboot erase cache
erasing 'cache'...
OKAY [ 3.071s]
finished. total time: 3.076s
C:\google>fastboot format cache
formatting 'cache' partition...
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
sending 'cache' (9052 KB)...
FAILED (remote: Bootloader is locked.)
finished. total time: 0.304s

I am concerned that there is no answer...
I am having the same issue.

I think your device's nand chip got corrupted. You can't do much about it. Try to send it to Google/Asus.

I hope that's not the case...

Can't flash my system

Hey,
one day my phone suddenly stopped working properly so i rebooted it. But instead of rebooting it had a bootloop.
I erased the whole phone and tried to flash the stock image but I get the following errors:
Code:
sending 'bootloader' (2203 KB)...
OKAY [ 0.109s]
writing 'bootloader'...
FAILED (remote: flash write failure)
finished. total time: 0.125s
rebooting into bootloader...
OKAY [ 0.016s]
finished. total time: 0.016s
< waiting for device >
sending 'radio' (45537 KB)...
OKAY [ 1.782s]
writing 'radio'...
FAILED (remote: flash write failure)
finished. total time: 1.798s
rebooting into bootloader...
OKAY [ 0.000s]
finished. total time: 0.000s
< waiting for device >
archive does not contain 'boot.sig'
archive does not contain 'recovery.sig'
archive does not contain 'system.sig'
archive does not contain 'tos.img'
Creating filesystem with parameters:
Size: 14129561600
Block size: 4096
Blocks per group: 32768
Inodes per group: 8144
Inode size: 256
Journal blocks: 32768
Label:
Blocks: 3449600
Block groups: 106
Reserved block group size: 847
Created filesystem with 11/863264 inodes and 95427/3449600 blocks
Creating filesystem with parameters:
Size: 587202560
Block size: 4096
Blocks per group: 32768
Inodes per group: 7168
Inode size: 256
Journal blocks: 2240
Label:
Blocks: 143360
Block groups: 5
Reserved block group size: 39
Created filesystem with 11/35840 inodes and 4616/143360 blocks
--------------------------------------------
Bootloader Version...: MAKOZ30d
Baseband Version.....: M9615A-CEFWMAZM-2.0.1701.03
Serial Number........: XXXXXXXXXXXXXXXX
--------------------------------------------
checking product...
OKAY [ 0.000s]
checking version-bootloader...
OKAY [ 0.000s]
checking version-baseband...
OKAY [ 0.016s]
sending 'boot' (6366 KB)...
OKAY [ 0.250s]
writing 'boot'...
FAILED (remote: flash write failure)
finished. total time: 0.343s
Press any key to exit...
Now I can not boot the phone or even open recovery mode...
What should I do? Is my Phone bricked? Can I repair it?
Hope you guys will help me.
Thank you for every hint

Seems like bad eMMC. RMA if the phone's under 2 years.

DrFredPhD said:
Seems like bad eMMC. RMA if the phone's under 2 years.
Click to expand...
Click to collapse
Is it for me possible to change the eMMC?
If yes where can I buy one ?

Forget about it. eMMC is a BGA part, you need professional tools or a lot of luck to change one at home successfully. If you could get a new motherboard it would be better, but I don't recommend it as a new motherboard would come blank or clone IMEI and you have no way of changing it to original one, and a used motherboard may have other problems/barred IMEI.

DrFredPhD said:
Forget about it. eMMC is a BGA part, you need professional tools or a lot of luck to change one at home successfully. If you could get a new motherboard it would be better, but I don't recommend it as a new motherboard would come blank or clone IMEI and you have no way of changing it to original one, and a used motherboard may have other problems/barred IMEI.
Click to expand...
Click to collapse
So what should I do now?
My phone is older than 2 years...

You could try follow this guide, but I don't think it will help (it's mainly for people who don't have working bootloader mode). http://forum.xda-developers.com/showthread.php?t=2347060
Failing that, new phone time. Moto G has similar specs at a good price.

[Q] N7 stuck at google screen, flash write failure, (Hardware replacement advice)

Yesterday, I was using my Nexus 7 tablet and it suddenly restarted itself. Since then it's been stuck at the Google screen every time I try to start the tablet.
Some info on my tablet:
- Running Kitkat 4.4.2 unrooted (did not update to 4.4.3 or 4.4.4)
- Can enter fastboot mode
- Cannot enter recovery mode (just gets stuck at google screen when I enter it)
- My warranty has ran out
I've tried to flash the device but I get this error:
Code:
sending 'bootloader' (3911 KB)...
OKAY [ 0.156s]
writing 'bootloader'...
FAILED (remote: flash write failure)
finished. total time: 90.745s
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 'tos.sig'
Creating filesystem with parameters:
Size: 28521246720
Block size: 4096
Blocks per group: 32768
Inodes per group: 8176
Inode size: 256
Journal blocks: 32768
Label:
Blocks: 6963195
Block groups: 213
Reserved block group size: 1024
Created filesystem with 11/1741488 inodes and 153337/6963195 blocks
Creating filesystem with parameters:
Size: 587202560
Block size: 4096
Blocks per group: 32768
Inodes per group: 7168
Inode size: 256
Journal blocks: 2240
Label:
Blocks: 143360
Block groups: 5
Reserved block group size: 39
Created filesystem with 11/35840 inodes and 4616/143360 blocks
--------------------------------------------
Bootloader Version...: FLO-04.02
Baseband Version.....: none
Serial Number........: 05848e98
--------------------------------------------
checking product...
OKAY [ -0.000s]
checking version-bootloader...
OKAY [ 0.000s]
sending 'boot' (7014 KB)...
OKAY [ 0.234s]
writing 'boot'...
FAILED (remote: flash write failure)
finished. total time: 90.153s
Press any key to exit...
I trawled through every thread I can find on this forum about this error, most of the time people just send it back to RMA for repairs. (however, my warranty has ran out)
Has anyone had this error and fixed it?
If this is a hardware problem and I want to fix this myself, what hardware do I need to buy? Is a new motherboard enough?

[Q] Nexus 4 bricked ? Please help to understand – Please !

Was on : LSv3.2 ROM / AK.355 AOSP kernal / All of a sudden phone rebooted and ended up in Bootloop
Phone Boots to Boot loader and Recovery just fine , TWRP showing 0MB as storage space. And getting following logs when I try to do MOUNT or FORMAT operation.
E: Cannot munt storage /Data/system etc
And same issue in fresh FAASHING, I get the following message
E: FAILED (remote: flash write failure)
Does this mean my Flash Memory is gone and need to change Motherboard fix issue ? Please let me understand the issue, Any help is deeply appreciated.
RA

Hey.. No relax.. Your software is messed up.. Do this--->>>
1. download the nexus factory image from Google developers
2. download wugfresh toolkit
3. Go to "flash stock+unroot" and tick device is softbricked
4. navigate to the factory image you have downloaded
5. let the toolkit finish,
PS:- DO NOT INTERRUPT THE FLASHING PROCESS
The device should boot up
Sent from my Nexus 4 using XDA Free mobile app

I tried it first; it didn't work (Nexus Root Toolkit by WugFresh) gave same message :crying:. I tried flashing standalone using fastboot commands that also gives same error. Copied the full log from NRT
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
sending 'radio' (45537 KB)...
OKAY [ 1.453s]
writing 'radio'...
FAILED (remote: flash write failure)
finished. total time: 1.469s
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 'tos.img'
Creating filesystem with parameters:
Size: 14129561600
Block size: 4096
Blocks per group: 32768
Inodes per group: 8144
Inode size: 256
Journal blocks: 32768
Label:
Blocks: 3449600
Block groups: 106
Reserved block group size: 847
Created filesystem with 11/863264 inodes and 95427/3449600 blocks
Creating filesystem with parameters:
Size: 587202560
Block size: 4096
Blocks per group: 32768
Inodes per group: 7168
Inode size: 256
Journal blocks: 2240
Label:
Blocks: 143360
Block groups: 5
Reserved block group size: 39
Created filesystem with 11/35840 inodes and 4616/143360 blocks
--------------------------------------------
Bootloader Version...: MAKOZ30d
Baseband Version.....: M9615A-CEFWMAZM-2.0.1701.03
Serial Number........: 003a98544753509d
--------------------------------------------
checking product...
OKAY [ 0.016s]
checking version-bootloader...
OKAY [ 0.016s]
checking version-baseband...
OKAY [ 0.016s]
sending 'boot' (6366 KB)...
OKAY [ 0.219s]
writing 'boot'...
FAILED (remote: flash write failure)
finished. total time: 0.328s
Booting up your freshly flashed stock device...
------------------------------------------------------------------
Wait for your device to finish booting up...
- It may appear to be boot looping; just wait...
- It could take 5-10 minutes; please be patient...
When its finally booted back up, please remember
to re-enable USB debugging if you plan on using
the toolkit to perform other operations.
NOTE: If this process was too quick and your device
is still in bootloader mode, then flashing stock may
have failed or been incomplete. Simply check the
log above: if you notice it skipped steps because it
didn't meet certain requirements, like the bootloader
or baseband version, then consider enabling 'Force Flash'
mode in the toolkits options menu and trying the
'Flash Stock + Unroot' processs again. Cheers.
Press any key to exit...

Oh... yup... flash memory is bad
Sent from my Nexus 4 using XDA Free mobile app

Thanks @ arkangel72.
Any other opinion from anyone ? Please let me know
RA

I browsed the net.. You have to take your phone to LG.. You have a hardware failure
Sent from my Nexus 4 using XDA Free mobile app

Thanks Sir - I have replace the logic board and phone back to work. (Got a Phone whose screen was damaged and swapped the boards) I have followed YouTube video on Nexus 4 fixes to conduct the board replacement, Pretty easy and straight forward.
RA

unlocking Bootloader without erasing userdata?

Hello,
i have a Nexus 7 2013 edition.
I updated the device and something went really wrong.
I want to unlock the Bootloader to flash it, but it don't work, because everytime i try to unlock it, the tablet wants to erase userdata. This is were the Nexus stucks.
When i try to unlock the device, this happens:
Code:
C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot oem unlock
...
(bootloader) Unlocking bootloader...
(bootloader) erasing userdata...
I tried to erase the partition without and with "-u" and "-w" but everything failed (i aborted because it went forever)
Code:
C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot erase userdata
******** Did you mean to fastboot format this ext4 partition?
erasing 'userdata'...
FAILED (status read failed (Too many links))
finished. total time: 392.412s
C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot erase userdata -u
******** Did you mean to fastboot format this ext4 partition?
erasing 'userdata'...
FAILED (status read failed (Too many links))
finished. total time: 187.879s
C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot erase userdata -w
******** Did you mean to fastboot format this ext4 partition?
wiping userdata...
Creating filesystem with parameters:
Size: 28521246720
Block size: 4096
Blocks per group: 32768
Inodes per group: 8176
Inode size: 256
Journal blocks: 32768
Label:
Blocks: 6963195
Block groups: 213
Reserved block group size: 1024
Created filesystem with 11/1741488 inodes and 153337/6963195 blocks
target didn't report max-download-size
wiping cache...
Creating filesystem with parameters:
Size: 587202560
Block size: 4096
Blocks per group: 32768
Inodes per group: 7168
Inode size: 256
Journal blocks: 2240
Label:
Blocks: 143360
Block groups: 5
Reserved block group size: 39
Created filesystem with 11/35840 inodes and 4616/143360 blocks
erasing 'userdata'...
FAILED (status read failed (Too many links))
finished. total time: 203.907s
Can someone tell me how i can unlock the bootloader without erasing the userdata partition?
Or can i use another tool instead of adb+fastboot?
Can someone help me?

Code:
fastboot oem unlock
This will always erase userdata, there is nothing you can do about it.
You don't need to manually erase the userdata again afterwards.

akoppes said:
Code:
fastboot oem unlock
This will always erase userdata, there is nothing you can do about it.
You don't need to manually erase the userdata again afterwards.
Click to expand...
Click to collapse
Ok, but the userdata cannot be erased because everytime i try to unlock the bootloader the system crashes while erasing userdata.
Is there anything i can do to repair the device, because i'm out of options.

Google for Nexus 2013 stock images and download them from Google . As they are signed images you can flash them with fastboot. After flashing boot into android, then power down. Now you should be able to unlock the boot loader using fastboot oem unlock.
It seems the userdata partition is messed up, and the above procedure should be easiest to fix that.
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