dancedating ru - Updating a firmware to format the nokia phone
If you can not unlock the decrpt, than the only solutions that you can try todo is doing hard reset or reformat.
Please follow steps at #option 4 above to reformat your Sony Xperia M using PC Companion applications.
In some case, the applications can make this smartphone become trouble such as hang or frozen or bricks or stuck or the LCD touch screen is not responding.
How to Unlock or Fix or Bypass or Solutions for SONY XPERIA M (C1904/C1905) & (C2004/C2005 DUAL) forgot password code or security lock screen pattern or pin (lost password)?
After giving the security protection at SONY XPERIA M (C1904/C1905) & (C2004/C2005 DUAL) such as password pin or screen lock pattern or other native protection which ready to use at this phone, some user have problem because they forget about the answer.
[A] Hi, maybe you or someone else every activated encryption.
If you can not remember the password, then you have to reformat Sony Xperia M operating system using PC Companion like steps at #option 4 above.
If you can not clean it up, then you may consider to do hard reset with master format to make it run more faster again.