If your drivers are correctly installed, you will see your device's serial number listed in the terminal window. Step 5: Relock the Bootloader (If Flashing Stock RUU)
Download the correct RUU executable (.exe) for your specific region and carrier version of the HTC One X9.
Sixty percent. Seventy.
The most popular option for the HTC One X9 appears to be , which is the successor to the legendary CyanogenMod. Various developers have created ports for the X9, providing a way to install Android versions like Oreo (LineageOS 15) on the device. Firmware Change Update on HTC One X9
If you are flashing a custom ROM or an unsigned firmware zip, your bootloader must be unlocked via HTCDev. If you are flashing an official, signed RUU (Rom Update Utility) matching your device's original CID/MID, this step may be optional. Required Downloads and Tools
Do use random firmware from untrusted sources. Good sources:
If an update is available, you'll be prompted to download and install it. It is highly recommended to connect to a Wi-Fi network for this step to avoid mobile data charges. For the OTA update to work correctly, your device must be running the official, unmodified operating system. Any modifications, such as rooting or changing the system recovery, will likely cause the installation to fail. If your drivers are correctly installed, you will
status, which prevents the user from "downgrading" to an older version of the firmware; one can only flash a version that is equal to or higher than the current one. The Flashing Procedure:
Over the years, mobile network operators have reconfigured their 4G bands. An old radio firmware may not handshake correctly with modern towers, leading to missed calls or slow data. A firmware update restores LTE stability.
| | Software (ROM/OS) | Firmware | | :--- | :--- | :--- | | Example | Android 6.0 Marshmallow → 7.0 Nougat (Custom ROM) | Radio, Bootloader, Touch Panel Firmware | | Location | System partition ( /system ) | Low-level memory chips (Radio, DSP, TrustZone) | | Primary Role | User interface, apps, features | Hardware communication (Wi-Fi, Cellular, Audio, Battery Management) | | Update Frequency | Weekly (custom ROMs) to Never (stock) | Rare; usually security or bug-fix releases | Seventy
Enabling automatic updates. You can choose to automatically download and install software updates for HTC or mobile operator apps. HTC One X9 dual sim - Updating your phone's software
Changing firmware completely wipes the device. Secure your photos, contacts, and app data before proceeding.
The story of the HTC One X9 and its firmware is a classic tale in the Android ecosystem. The phone's official support journey, from its Android 6.0 Marshmallow launch to its final stability updates in 2017, is complete. Its official updates are no longer available, and its software is woefully outdated.