button and connect the phone to your computer via USB. The LED should turn green, indicating it has entered Flashmode.

: The software will begin flashing the file. Once it reaches 100%, disconnect the device and power it on. The lock should be removed. Alternative: Sony Xperia Companion If you prefer an official method, you can use Xperia Companion Open the software and select Software Repair Follow the prompts to reset the device. : This method will erase all user data Important Considerations

A: The H4311 lock is a type of high-security lock designed for commercial and industrial applications.

Press and hold the and Volume Down buttons simultaneously until the Sony logo appears.

In both firearms and lock mechanisms, means that a component fails to advance into the correct position. In a gun, it means a round does not properly enter the chamber. In a lock that interacts with a feeding system (like a locking bar on a bullet trap or a security cover on a loading port), FTF means the lock’s bolt or cam does not retract fully, preventing the next "round" or item from indexing.

Your device should have at least 50% battery to prevent shutdown during the flashing process. Necessary Tools: