Share your experience!
hey,
my cousin's sony walkman wt19i is now locked as his friend entered wrong pattern 20 times and he (cousin) forgot the security question, now tell me how to reset the whole mobile phone to back to original setting.
please answer as soon as possible 
You would need to run the phone through the Update Service program http://bit.ly/Jb00HG
The internal memory would be erased during this process.
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by the way i did it the same day but forget to close this post
right now ics is running extremely well on that phone.
Thanks to SONY for that much easy process. It was as easy as searching on google 