A new software update build H63120i is now available for the T-mobile LG G Styl H631.
Download T-mobile LG G Stylo H631 stock kdz firmware H63120i
LG Server: H63120i_00_1018.kdz
Mega mirror: H63120i_00_1018.kdz
To unbrick/restore LG G Stylo H631 back to stock, You need to install:
Once you installed the LG USB drivers, LG UP and LG UP Dll for LG H631,, Connect your LG H631 to PC VIA USB cable and put your phone into download mode.
Run the LG UP, from the LG UP main screen, select Upgrade, and select the kdz firmware you just download, and then click start to unbrick your LG H631.