Even with the correct steps, you might encounter errors. Here are some of the most common issues and their solutions:

: Release the button once the progress bar starts. Wait for the tool to display "Flashing finished". 3. Post-Flash Activation Disconnect the device and power it on by holding the The first boot will take longer than usual. Factory Reset Protection (FRP)

Locate the checkboxes on the upper-right section of the configuration pane. Ensure USERDATA , CACHE , and APPSLOG are explicitly checked. This is the critical configuration that removes the pattern or pin lock. Click the Flash button at the bottom.

A window will appear with various checkboxes. This option is crucial for successfully flashing custom or region-specific FTF files on many Sony devices and can prevent the common "red text" errors during the flash process. In the "Wipe" section, ensure all boxes are checked. This will ensure that all user data, including the forgotten lock, is completely removed.

Removing the screen lock via FTF or Xperia Companion will likely trigger . After the reset, the phone will ask for the Google Account credentials previously synced to the device. You must have these to regain full access to the phone. If you'd like, I can:

Using the wrong firmware file can permanently damage your phone's partition table. Follow these steps to get the exact match. Launch on your computer.

Once completed, the log console in Flashtool will output a message stating: "Flashing finished." or "Please unplug your device and start it."