Originally Posted by Perry2547
I had the same problem. My phone was stuck in recovery and stupidly accepting an update from AT&T. I couldn't do anything with ADB.
Then I found this and it worked perfectly though it has to be put in exactly as it is written:
Hope that works for you.
Many thanks bro! I've got a LG G3 F400s and it stucked on TWRP, cannot boot up! I've try so much with no luck!
So I juz try to find a way to get sideload work so that I can flash the recovery.img.
But with these 2 commands, my phone booted up! WOW!
Thank you alot, my friend!