Bene... ho provato il Nexus root toolkit ti WugFresh, che mi sembrava abbastanza facile.
Ho quindi dapprima provato a riflashare una rom stock (la 4.4.4) facendo fare tutto a lui, e selezionando l'opzione softbrick (visto che al boot andava in loop).
Ho dapprima sbloccato però il bootloader... e ok.
Ma il re-flash non andava a buon fine. Il log è il seguente:
Flash Stock + Unroot...
erasing 'boot'...
OKAY [ 0.022s]
finished. total time: 0.023s
** Did you mean to fastboot format this partition?
erasing 'cache'...
OKAY [ 0.084s]
finished. total time: 0.086s
erasing 'recovery'...
OKAY [ 0.023s]
finished. total time: 0.024s
** Did you mean to fastboot format this partition?
erasing 'system'...
OKAY [ 0.100s]
finished. total time: 0.101s
** Did you mean to fastboot format this partition?
erasing 'userdata'...
OKAY [ 4.944s]
finished. total time: 4.950s
sending 'bootloader' (2100 KB)...
OKAY [ 0.266s]
writing 'bootloader'...
FAILED (remote: (InvalidState))
finished. total time: 0.394s
rebooting into bootloader...
OKAY [ 0.020s]
finished. total time: 0.021s
sending 'radio' (16384 KB)...
OKAY [ 1.982s]
writing 'radio'...
OKAY [ 0.658s]
finished. total time: 2.647s
rebooting into bootloader...
OKAY [ 0.020s]
finished. total time: 0.021s
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: 30063722496
Block size: 4096
Blocks per group: 32768
Inodes per group: 8192
Inode size: 256
Journal blocks: 32768
Label:
Blocks: 7339776
Block groups: 224
Reserved block group size: 1024
Created filesystem with 11/1835008 inodes and 159204/7339776 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...: 3.41.3
Baseband Version.....: N/A
Serial Number........: 015d2bc2a61c140e
checking product...
OKAY [ 0.030s]
checking version-bootloader...
FAILED
Device version-bootloader is '3.41.3'.
Update requires '4.23'.
finished. total time: 0.174s
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.
Per cui ho cercato un bootloader 4.23, l'ho messo sul dispostivo e tutto sembrava ok. Ma, provando a riavviare, il tablet è rimasto stramorto. On+Vol- On+Vol+ On e basta. Nulla.
Amen
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