If you previously unlocked your bootloader to root your phone, the standard RUU wizard will fail unless your phone is S-OFF. If your phone is S-ON, you must relock the bootloader first: Boot into Fastboot mode. Open your PC command prompt and type: fastboot oem lock
Wait for the progress bar to complete. The phone will automatically reboot into the freshly installed stock Android system. Method 2: Using the SD Card Zip RUU (Alternative)
Click Next to start the flashing process. Do not unplug the USB cable or close the program. Your phone screen may turn black or display a progress bar; this is normal.
Before updating your HTC Android phone ROM, consider the following precautions and risks:
: Your PC needs to know what to do when you plug the phone in. Install the official HTC Sync Manager or the HTC USB driver package. Once installed, connect your phone to ensure Windows recognizes it without showing an error in Device Manager. htc android phone rom update utility
This happens when you try to flash an RUU that does not match your phone's specific CID/MID configuration, or you are attempting to downgrade on an S-ON device.
The utility will automatically scan for your connected device. If your phone is booted into Android, the utility will automatically reboot it into .
Do not unplug the USB cable or touch the phone during the process. The phone screen may go black or show a progress bar.
If you downloaded a .zip format RUU, you can flash it without the desktop wizard: If you previously unlocked your bootloader to root
An installation wizard will open. Read and accept the on-screen warnings regarding data loss.
Press the key to confirm and start the flashing process.
Make sure your device has sufficient battery charge. It's recommended to have at least 50% charge before proceeding with the update.
If you are firing up an old HTC Desire, One M7, or One M9 as a backup phone or music player, the RUU is the best way to wipe it clean and start fresh. Just remember: The phone will automatically reboot into the freshly
I can provide the exact file names, commands, or troubleshooting steps for your specific situation. Share public link
: Manually upgrades the Android OS version when automatic updates are unavailable. Emergency Recovery
Flashing a specific RUU will force your device onto the designated Android version contained within that utility. Risks and Prerequisites Before You Begin
Verify that the current image version matches your update goals, then click .