Once the process hits 100%, the phone will restart with the new firmware. 4. Troubleshooting Firmware Update Issues
Used with SP Flash Tool for clean unbricking and manual downgrades or upgrades. Essential Prerequisites
Identifies the specific region or network carrier (e.g., HTC__001 for international WWE, or HTC__032 for specific regional variants). The firmware variant you download must match your CID unless your device is S-OFF. 2. Essential Prerequisites and Safety Measures
is through official wireless updates provided by HTC or your mobile operator. Firmware Change Update on HTC One X9
Turn off your phone. Press and hold Volume Down + Power to enter the bootloader. Select FASTBOOT . Connect to PC: Plug your phone into your computer.
Transfer the ROM zip file either onto your external MicroSD card or utilize the TWRP ADB Sideload feature.
To change or update firmware outside of standard Over-The-Air (OTA) paths, the device bootloader must be unlocked. HTC provides an official, safe path for this via their developer portal. Steps to Unlock via HTCDev Once the process hits 100%, the phone will
By default, the HTC One X9 ships with S-ON. This security state verifies the digital signatures of all firmware partitions (like boot, system, and recovery) before allowing them to boot. Under S-ON, you cannot flash firmware from a different region or downgrade to an older software version easily.
This occurs if you attempt to flash an official firmware zip package intended for a different carrier model or software edition while your phone remains in S-ON mode.
Tap on Software information to check current versions. HTC__001 for international WWE
What is the current ? (Working normally, bootlooping, or completely unresponsive?)
This usually means the firmware file is for a different model or region. Double-check your MID (Model ID) and CID (Carrier ID).