How to Unbrick the HTC One X

When your HTC One X becomes bricked, you may experience force-close errors, freezing issues, and problems with powering your device off and on. If you've managed to brick your HTC One X, you can unbrick your device by either performing a...

Method 1 of 2:

Performing a Hard Reset

Verify that your HTC One X is fully charged. A full charge will help ensure that your device will not power down at any point during the reset process and cause further complications.
Back up all personal data, if possible. A hard reset will wipe and erase all data from the memory of your device.
1. Sync your personal information with Google's servers, or connect your HTC One X to your computer using a USB cable so you can transfer personal data to your computer.
Tap on 'Settings,' then tap on 'Power.'
1. If you are unable to access the menu on your device due to software problems associated with bricking, skip ahead to step #5.
Remove the checkmark next to 'Fast Boot.'
Power off your device.
Press and hold the Volume Down key, then press and hold the Power button.
Continue pressing both keys until the device powers on.
Release the Power button. The Bootloader options menu will display on-screen.
Use the volume keys to navigate to and highlight 'Factory Reset.'
Press the Power button to make your selection. Your HTC One X will reset, restore the original factory settings, and will be un-bricked.^{[1] X Research source}

Method 2 of 2:

Reversing New Updates

Power off your device.
Press and hold the Volume Down key, then press and hold the Power button.
Continue pressing both keys until the device powers on.
Release the Power button. The Bootloader options menu will display on-screen.
Use the volume keys to navigate to and highlight 'Recovery Mode.'
Press the Power button to make your selection. Your HTC One X will boot into recovery mode.^{[2] X Research source}
Use the volume keys to highlight 'wipe data factory reset,' then press the Power button.
Navigate to and highlight 'wipe cache partition,' then press the Power button.
Press the back button, then select 'advanced.'
Scroll to and select 'wipe dalvick cache.'
Press the back button until you return to the recovery mode menu.
Scroll to and select 'reboot system now.' Your HTC One X will reboot, and any recent updates you applied to your device will now be removed.^{[3] X Research source}