As you may know, you have to back up the TA-partition before you put a custom ROM on the Sony Xperia Z1. I've backed up the partition with this .bat file: http://forum.xda-developers.com/showthread.php?t=2292598&highlight=ta
I've rooted my Z1 successfully and flashed a custom ROM on it (PACMAN-ROM). Right after that, I've tried to restore the TA-partition with that same program (.bat file), because the camera didn't work well (the camera wouldn't focus and the flash wasn't working).
Everything went well until the program asked me to reboot the device. It shut down and did not boot again.
I've tried to put a boot image (adv-stock-v3.img) on it again with CMD (SDK, platform-tools, ya know) while the Z1 is in fastboot-modus.
But I keep getting the "FAILED <remote: Command not allowed>"-error.
C:\Users\Teake\Desktop\adt-bundle-windows-x86-20130917\sdk\platform-tools> fastboot flash boot adv-stock-v3.img sending 'boot' (13254 KB)... OKAY [ 0.454s] writing 'boot'... FAILED <remote: Command not allowed> finished. total time: 0.458s
How can I get my boot image working again on my Z1?