[Q] Failed to flash via flashtool / soft/hard-bricked phone ?! topic

Hey Guys,

I wanted to root my xperia zl on firmware 10.4.B.0.569 (LB),
so i flashed the old 10.3.1.A.2.67 and installed XZDualRecovery.
So far all worked fine.
As i wanted to update/root with NUTs method i accidentially first flashed C6503_10.4.B.0.569_Stripped.ftf before flashing C6503.flashable.10.4.B.0.569.zip.
I wanted to flash 10.3.1.A.2.67 and start again as i did not want do brick my phone, but this failed...

Flashtool detects my phone in flashmode, but all atempts to flash any ft file are aborted:
ERROR - Error flashing. Aborted


I hope somebody can help me and know what i shoould do.