N7 stuck on bootloader, no cache, cant unlock

stevieag

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hi,

my bootloader will not unlock?

I had a few issues with random shut downs and was getting concerned.

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)

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,

sideload gives

E:failed to mount /cache (invalid argument)
E:failed to set up expected mounts for install; aborting
installation aborted
E:failed to mount /cache (invalid argument)
E:cant mount /cache/recovery/log
E:cant open /cache/ recovery/log
E:failed to mount /cache (invalid argument)
E:cant mount /cache/recovery/last_log
E:cant open /cache/recovery/last_log
E:failed to mount /cache (invalid argument)
E:cant mount /cache/recovery/last_install
E:cant open /cache/recovery/last_install
E:failed to mount /cache (invalid argument)
E:cant mount /cache/recovery/log
E:cant open /cache/ recovery/log
E:failed to mount /cache (invalid argument)
E:cant mount /cache/recovery/last_log
E:cant open /cache/recovery/last_log
E:failed to mount /cache (invalid argument)
E:cant mount /cache/recovery/last_install
E:cant open /cache/recovery/last_install

can get to fastboot

i have tried flash from fastboot etc

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

is there anyway to rebuild?

pray you can help
 

CJM

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Have you tried a different usb port? It may sound silly, but I've seen that to be the cause of problems before.

Also, here's our sister site dedicated to the Nexus line Nexus 7 Forum
 
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stevieag

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Have you tried a different usb port? It may sound silly, but I've seen that to be the cause of problems before.

Also, here's our sister site dedicated to the Nexus line Nexus 7 Forum

Thanks, tried differing USB cables and ports without joy

i have now registered on your sister site, thanks
 
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