@newbie089 I did not brick it!
When the battery was empty, I was able to get back into fastboot mode and use twrp again.

I tried and failed to flash it with emma (could not be recognized even though in flash mode (green LED)) so i tried to flash the current devel_flashable (#2351078025 master 60732a96) and I am now back at the start (when I boot there is nothing happening but the SONY Logo showing all the time).

Any help is appreciated. Cheers

Did I brick it?

I just flashed my Sony Xperia 10 (I3113) according to the guide on top of this thread (thank you for it!).

I used the latest artifacts available (#2351078030 master 60732a96) and flashed sucessfully (I took care of the twrp stuff).

When i did the 'fastboot reboot', the Sony logo showed up, but ever since nothing happended. I did not find a way out of this routine. Can someone help me?

Thanks!