Sorry for my bad English but i saw Z4 Tablet now listed in official Sony Developer page for Unlock Bootloader. So if I selected Z4 Tablet in drop-down list to Unlock Bootloader my Z4 Tablet won't get brick even I open My Xperia, right? 


If you enable (not just opening), your device will brick.Sorry for my bad English but i saw Z4 Tablet now listed in official Sony Developer page for Unlock Bootloader. So if I selected Z4 Tablet in drop-down list to Unlock Bootloader my Z4 Tablet won't get brick even I open My Xperia, right?![]()
I following your guide but i saw you choose Z3 Tablet Compact in devices list, but now Sony added Z4 Tablet in devices list, so I think if we UB choose Z4T we won't get brick :highfive:If you enable (not just opening), your device will brick.
Yoy have to read notice carefully...
It's old guide now...I following your guide but i saw you choose Z3 Tablet Compact in devices list, but now Sony added Z4 Tablet in devices list, so I think if we UB choose Z4T we won't get brick :highfive:
Okay, thank for your help :fingers-crossed:It's old guide now...
I'll update it, but choosing Z3TC was just a workaround to get unlock code.
Actually Sony generate unlock code based on IMEI, so device list won't affect anything.
Do you have fastboot drivers? What does it say when you enter commands?I did that mistake and now I can't use fastboot commands, everything is ok, but fastboot.
Is there a way back?! I just want to root my device![]()
so you can flash via flashtool using fastboot mode. try thisMy drivers are ok, since I unlocked the BL.
Also tryed (again) to reinstall drivers, following your link, same:
S:\Android\Toolkit>fastboot flash boot boot.img
sending 'boot' (39980 KB)...
OKAY [ 0.895s]
writing 'boot'...
FAILED (remote: Command not allowed)
finished. total time: 0.916s
i think your bootloader is lockedI had same output
Sent from my SM-N910F using Tapatalk
I receive same output trying to unlock BL.i think your bootloader is locked
have you check in *#*#7378423#*#* in Service Info -> Bootloader Unkocked:Yes?
Sent from my SGP771 using Tapatalk
so your BL doesn't unlocked yet. You need to try this. Wifi version just enter code like that in Phone callI receive same output trying to unlock BL.
BTW I have WiFi version, how to enter Service Mode?
Sent from my SM-N910F using Tapatalk
I unlocked BL in the first 10 minutes I had this device.so your BL doesn't unlocked yet. You need to try this. Wifi version just enter code like that in Phone call
Sent from my SGP771 using Tapatalk
Hi!S:\Android\Toolkit>fastboot flash boot boot.img
sending 'boot' (39980 KB)...
OKAY [ 0.895s]
writing 'boot'...
FAILED (remote: Command not allowed)
finished. total time: 0.916s
Thanks, I tried same thing, how did you wipe?Hi!
Had the same problem! Wiped the tablet and after it it worked to unlock the Bootloader w/o problems.
It is because of MyXperia beeing active.
I could not disable it in device administration so i wiped the tablet and after that everything was ok.