TWRP Recovery is now working on the LG G Flex, even those with locked bootloaders can also install TWRP recovery. It’s created by @Dees_Troy and you can install it by using Flashify.
Flashify is a tool that allows you to easily flash boot.img, recovery.img and also .zip files. To flash .img files, you won’t even need to have a custom recovery. Just flash and reboot.
You need your phone rooted before do this. Search my site to root your LG G Flex first. Once rooted follow the below steps:
How to enter into TWRP:
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