To ensure the lock is removed, you must select the "Wipe" options (User Data, Cache) in the Flashtool sidebar. Warning: This will erase all photos, contacts, and personal data.

model. XperiaBlog often hosts repository links for these files.

If you prefer an official tool, the Xperia Companion software offers a feature. This also flashes the device to factory settings and can remove screen locks, though it may still trigger FRP if a Google account was previously active. Bypassing FRP (Google Account Lock)