Nokia 301 rm-839 security(user) code

Hi BEST Team, can you help me recover security(user) code from nokia 301 without data lose. I can only read fullflash from phone. When phone goes to Test Mode, BEST hang. From fullflash I can recover contacts, part of sms and gallery. But for me need open SMS folder in phone. What can I do? Need to upload fullflash for you?