Made the same mistake : said yes when the tablet proposed me to update. Booted in TWRP.
Tried to flash with support tool but it stops at 95% and tells me in german (!) to remove the battery and try again... I've tried many times (without removing the battery obviously), just the same.
And now I can't get out of the download mode. Everytime I plug the USB cable, it goes to download mode.
Any suggestion ?
I even tried this method : http://forum.xda-developers.com/show....php?t=2622777
and it stops giving me a decompression error...
Edit 2 : it finally uncomressed corectly but i'm still stucked at 95% when installing : WPARAM_UPGRADE_ERROR
EDIT 3 :
Using the method http://forum.xda-developers.com/show....php?t=2622777
and leaving default parameters : Korean language and country it finaly worked with the V50010A_00.kdz firmware.
My lg g pad is finally booting ! (the battery is totally drained)
Thanks to all !