[fm4r1n]

No soy experto en esto, espero que estos tutoriales te sirvan

htc m9 orange españa
http://www.htcmania.com/showthread.php?t=1085921

RUU & STOCK ROM COLLECTION FOR HTC ONE M9
http://forum.xda-developers.com/one-...ne-m9-t3095746

guia adb fastboot
http://www.htcmania.com/showthread.php?t=1184745

tutorial cid
http://www.htcmania.com/archive/index.php/t-251787.html