If you want to install any ROM, basically u need to unlock bootloader, s-off and change cid to supercid and well root the phone.
Sent from my HTC One using xda app-developers app
: HTC One M7 AT&T (Unlocked, Rooted, Bootloader Unlocked, S-OFF)
: Android Revolution HD 62.0 by Mike1986
Sense 5 Toolbox, Gravity Box [KK],
TWRP v. 220.127.116.11
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