[Q] LG G2 stuck in Firmware Update Screen (+loop) topic

Hello Guys!

My Problem (I've looked for about 2 hours in the forum, but can't find anything similar to my situation):

Got my new LG G2 (D802, 32GB, Android 4.4.2) today. I wanted CyanogenMod on it, so i unlocked it, etc...

But as i have installed in recovery mode, and after that i always got stuck at the CM 10.2-Boot screen i decided to install the stock android back onto it.

i went into download mode, choose the right .kdz-file and tried to flash it with LG Flash tool 2014.

But it got stuck there at 20%. My current situation: I can't get out of the screen where it says "Firmware upgrade and 0%, und below is "B75" and "rooted". When i press the power button for some seconds the screen gets black, then the LG logo appears and immediately the Firmware-upgrade-screen appears, again with "0%" and "B75" and "rooted".
I also can't get into recovery mode: When it push volume down and power butten, and it asks me to do a factory hard reset and i press the power button to confirm (when normally then the recovery mode menu appears) it changes automatically again to the Firmware-upgrade-screen.



Thanks in advance, hope you can help!