I made this guide after struggling to install TWRP using several guides on XDA and other forums which fail to mention few other steps needed.
I am using a verizon lg g2 on stock lollipop 5.0.2 , rooted using LG ONE CLICK ROOT. But i guess this guide goes for all g2 variants who cannot simply install twrp on their stock firmware using flashify or autorec.
ISSUE :
I have tried flashify but this app is only useful if you already have an older version of recovery installed since i failed to install any version of twrp and cwm while trying. After installing a twrp , you can flash upgrade recovery using this.
Autorec gives me unresponsive button when tapping on the FLASH TWRP icon.
Other solution requires manual installation such as THIS GUIDE which i haven’t tried because i am not that advanced android user yet since i came from using iOS.
The easiest way to install TWRP is autorec but to fix the unresponsive button, follow below steps:
** Ofcourse you need root in order to install custom recovery
1. Install AUTOREC from HERE. There are different app for different g2 variant so install accordingly.
2. Go to SuperSU settings , uncheck " Enable Superuser" and then scroll bottom where you see " reinstall" under CLEANUP section. Tap on that and proceed. Wait few seconds and when done, reboot your device.
3. Go to THIS LINK and download supersu 2.46
4. After its downloaded, tap and install it. Update binary and reboot.
5. Go to autorec, give it superuser permission and tap on the "Flash TWRP" icon and you will see it working.
** note : in order to install latest twrp, you must first install the initial img version and then flash the latest version zip from within. Update link : TWRP 3.0.2-1
Feel free to post below if it worked for you or if you need further assistance.