How to Update a Rooted HTC One M8 to Marshmallow (Currently Kit Kat)

[Andy_Sixx]

Hello, i have red so many forums of how to update a rooted htc one m8, but there are so many opinions i'm left very confused. Some say you only need to flash stock recovery (never clarified which version of the recovery, the one in the update you are going to install or the one your device is currently at, mine is at 3.29.161.9), other say you need to Install Stock Nandroid Backup, flash the stock recovery and relock the bootloader. When i rooted my phone i unlocked the bootloader, installed TWRP and from TWRP I installed SuperSU. So what is the actual procedure for updating a rooted HTC One M8?

 

[B. Diddy]

Moved to the M8 Rooting forum.