How to Update HTC One M8 to 6.0.1 Custom ROM

needed :
1- Backup your data from your HTC One M8 .
2- Install USB drivers (here)
3- Enable USB debugging on your device: Settings > Development Options > USB debugging.
4-Ensure that your bootloader is unlocked learn here and that you have a recovery tool like TWRP or CWM.
5-Your device must be charged to at least 80% of power.

How to flash :

1- Download (here) 6.0.1 Marshmallow ROM for HTC One M8.

2- copy the ROM file to your phone’s SD card root folder.

3- copy and paste the boot.img file to android-sdk-windows\platform-tools directory.

4- Boot your device in the Bootloader mode by pressing and holding the Volume Down and Power keys.

5- Once in Fastboot mode, navigate to android-sdk-windows\platform-toolsdirectory on your PC and open Command Prompt (Shift + Right-click > Open Command Prompt).

Type the following command:
- Fastboot flash boot boot.img – press Enter.
- fastboot reboot – press Enter.

6- Follow the onscreen instructions on your phone. Select Bootloader > Recovery.
7- Once in recovery, perform wipe data tasks: from the recovery menu, select wipe data / factory reset and confirm the process.
8- Also perform wipe cache partition followed by wipe dalvik cache (from Advanced).
9- From recovery main menu, select install zip from sdcard followed by choose zip from sdcard. Locate the Android 6.0.1 custom firmware file and confirm the flashing process.
10- Return back to main recovery menu and reboot your HTC One M8 into the new custom ROM.

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