I have this old phone and unfortunately my phone has died. how can i unlock this phone so i can use it with a different provider, i've heard people can do such a thing i have a nokia rm-77 model: 6101b IC: 661U-RM77 FCC IDPIRM-77 IMEI: 356642/00/130559/7 code: 0525914IM08R4 if someone could point me in the right direction that would be great thank you!