my Sagem MW3026 has been locked with provider 51502, please help unlock it all to accept all sim. thanks

IMEI: 35074735027128-6
IMEISV: 00
Version: DJ3, 5C 201001 1413
Field 0: 083A05473705722168
251: 3770E858
252: 376CD976433AD1A6E2B6686FE7F11F
253: 766C1B672B48550B75C2BB9B
5251: 446C48648EDB3B32DBFA
16128: 3200
5374: 0256