to install a stock firmware (.ftf) file. While specific "lock remove" FTF files are sometimes shared in forums, a standard stock firmware file flashed with the "wipe user data" option selected achieves the same result.
, if you enter the wrong pattern five times, a "Forgotten the password?" button may appear. You can then unlock it by signing in with your Google account. Download C1905 Xperia lock remove ftf
Sony Xperia M (C1905) Go to product viewer dialog for this item. to install a stock firmware (