ok, im at a dead end:
- i can get in emergencymode, not in recovery;
- i can install kdz-files from laptop with the phone in emergency-mode, but only the official kdz-files are installed without errors. All other options for installing firmware from a pc fail, i cant get it installed (b2capps) or i can but the program doesn't recognize the form (lg pc suite). Flashing new CWM from laptop failed also.
- even with kdz-files installer android doesn't go past second boot screen (the live one). I got past it once, but i cant repeat the process. i got to CWM then, but when i tried to restore a backup it got in a bootloop. After that all attempts getting past bootscreen have failed.
I got my old phone back, but if somebody has a idea how to revive the LG i'll appreciate it! Right now i'm considering it bricked.