Use OTA Root keeper to backup root and then try updating to the late start OTA.
Sent from my LG-E971 using Tapatalk 2
Can you pull the ota file do some others can use it?
Sent from my LG-LS970 using xda premium
Explain how and I will, no problem.
Sent from my LG-F180L using xda app-developers app
download it but dont install it. try path
/data/fota
Sent from my LG-F180S
http://xdaforums.com/showthread.php?t=2112190
use this tool.but f180l's lastest update is 20l