Firmware Change Update On Htc One X9 -

No. Root modifies the system partition, not firmware partitions ( aboot , radio , sbl1 ). However, if you update HBOOT, you may lose the ability to boot custom recoveries. Re-flash TWRP after the update.

: Before installing a new ROM, you must perform a "Wipe Data/Factory Reset" to ensure a clean installation. Install the ROM Firmware Change Update on HTC One X9