Xperia:Hard Brick Recovery

Something might get screwed up bad enough that your phone will no longer boot. Holding power won't do anything, not even give you a vibration or turn on the LED in the power button. Connecting to the computer only shows a QHSUSB_DLOAD device connected. This is a hard brick, but not a hopeless situation.

Things to try:

1. Remove the battery and disconnect the phone from the computer.
2. Hold down the power button for about ten seconds, then keep holding it while replacing the battery.
3. If your phone does not boot, remove the battery and repeat step 2.
4. If it does boot, recover your data, then try flashing the phone back to stock. Otherwise, try PC Companion.

PC Companion (aka Xperia Companion)

1. Download the software:
   • Download link coming soon, sorry! Hit up /u/Antnommer if this still hasn't been updated and you need it.
2. Install and run PCC.
3. Boot your phone into the OS and connect it to the computer.
4. Select to reset your device, and follow the steps.