Procedure to Update HTC One S with Onyx Custom ROM Firmware:
- Download the Onyx Custom ROM firmware from here to your computer. Connect your phone to the computer and then place the zip file in your device’s SD Card. Ensure that you are not placing the file deep into the sub folders or else it won’t be detected in the device.
- Now, disconnect the phone and turn Off the device so that it can be entered in the recovery mode via boot loader mode.
- The Boot loader mode in HTC One S can be entered by pressing Volume Down Key + OK button, and holding both simultaneously press the Power Button. If the phone boots in the normal mode then you need to try again to enter into the recovery mode.
- In the boot loader mode, you need to select “recovery” so as to enter into the recovery mode. Now, in the recovery mode, you need to select “install zip from sd card” > “choose zip from sd card” and then choose the Onyx Custom ROM Firmware Package which you have placed in the device.
- After selecting the package it takes around 5 minutes to apply the zip file in One S. Once the firmware is applied successfully, the device will land up in the recovery mode. Now, in the recovery mode screen, select“++++ Go Back ++++” > “reboot system now” to reboot the phone. Please note that it will take more than normal time as it will be finalizing the installation.
Note: At any point of time just in case if the process of firmware update gets stopped due to any reason, all you need to do is restart the process from the start by re inserting the battery.
Congratulations, you have now successfully applied the update of Onyx custom ROM firmware in your device. Do let us know in the comments section just in case if you face any issues in the process of firmware update as we will make sure to sort out the same at the earliest.

