Unhappy [Q] need help for rooting & unclocking Panasonic 003P sweety

Hey Devs

I have a phone from Japan
Model: Panasonic Sweety 003P
Android: 2.3.3 (gingerbread)
Currently the phone is locked to carrie Softbank.

I would like to root & unclock it. Tried with many attempts as below but failed to root. Please suggest.
- Superone click 1.5, 2.2, 2.3.3 : all stuck at step 7
- srs root

Phone get restarted many times during process, but nothing happens. I am not sure is there any bootloader lock or not, as I can't check through services option.

Please help me devs