Black screen after flushing new kernel

[raffis2]

Hi guys


I really need your help!
Just unlocked my new z4 tablet and flushed a new kernel.
The short version, I've flushed androplus kernel v10 and rebooted the tab and completed the android wizard.
And the stupid thing is, I've forgot to activate usb debugging and rebooted the tab.
And now I have a black screen. The tablet doesn't show anything on the display.
After turn on it just vibrates shortly, but the screen is black.
The only thing I can do ist start fastboot, but since I did not enabled usb debugging I can't do anything, like reflush:

C:\adb>fastboot flash boot boot.img
sending 'boot' (31948 KB)...
OKAY [  1.239s]
writing 'boot'...
FAILED (remote: Command not allowed)
finished. total time: 1.256s

I'm pretty sure it is this stupid sony my xperia protection, I was so stupid to turn on "locate my device" or whatever.
(Before the fastboot oem unlock, I had to disable this thing in the android settings. If it was activated I got command not allowed from fastboot)

I have a black screen, usb debugging disabled and this stupid xperia protection is enabled, what can I do?

Please help
Thanks a lot!

 

[raffis2]

Awesome, was able to fix it myself. With great help from this forum (Other older posts).

If anyone got the same problem, don't worry if fastboot doesn't work anymore.
You would be able to flush a new firmware (stock.)

1. Get latest version of flashtool
2. Download a firmware for your Device (Xperifirm)
3. Flush firmware in flashmode (Connect your device in flashmode, not fastboot)
4. Finish, your device will boot again!:laugh::laugh::laugh::laugh::