Hello guys, please i bought this htc one m7 phone from a friend and he said he flashed it with M8 firmware. but i wish to use Marshmallow ROM on it and i have the following questions.

1. How do i flash the phone normally?

2. How do i install CWM recovery

3. Is there qn official marshmallow for m7?

4. If there isnt please i need a link to download the custom version and steps on how to successfuly upgrade it.

Thanks in advance

am i being ignored or it is that no one on nairaland has a knowledge of it?

Go to xda You'll see all you are looking for there

Download TWRP recovery
Download SuperSU zip file
Download ADB minimal file
Backup your files
Go to htcdev.com and unlock your bootloader
Hold volume down + power to boot to bootloader
Select Fast boot
Plug phone into your PC and open your minimal ADB file and execute the following command 'adb devices' and press enter
If you find your device, then 'fastboot flash recovery nameoftwrprecovery.img' press enter
Then 'fastboot erase cache'
After the above, select fastboot again on the phone and highlight recovery, then the phone will boot to TWRP recovery. From there you can then flash your CM.