HTC Desire 626s "Rooted" How to OTA Marshmallow Update + RE-Root
I'm guessing that I am one of the few brave souls that decided to upgrade from Lollipop to Marshmallow.
It was kinda a PITA so I will share with you how to pull it off.
This is for devices that have been rooted or have a modified Rom.
Note: 1 ----> ---> --> Once you go Marshmallow there is no going back !!!
This means don't load any of the LOLLIPOP roms.
I'm working on downgrading but just know....after you upgrade to Marshmallow the current RUU on the HTC website will not take you back to Lollipop.
Section #1 Boot Loader --- Boot Loader --- Boot Loader
Your Boot loader should be unlocked.
First things first.
This is for the HTC Desire 626s after it has been rooted.
I'm going to assume that your boot loader is in "Unlocked" or "Re-Locked" state.
I would also guess that you have installed a custom recovery like TWRP.
Now is the time to use that recovery and make a Backup.
After you have made the backup " To a SD Card" (remember we will be erasing everything on the phone except the SD Card)" we need to check that the boot loader is unlocked.
After powering down, press Volume Down and while pressing Volume Down, press Power holding both buttons to start the device into Bootloader mode (now Download mode for One M9 and newer devices). If you have difficulty, power up normally, go to Settings->Battery and deselect Fast boot. Power down and try again.
It will show the status of the boot loader.
We need the boot loader unlocked !!
If your boot loader is locked or relocked follow the instructions in the next link.
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