8350i wont read nex/boost sim help please

[f13135]

I been trying two make it work with diferent os systems like the 5.o and 4.6 but wont read and some times rite after i install the os it works then couple minites later it shuts down it loads and wala no more network and it says something that sim error, this same sim works on my other 8350i and its a 64k boost sim please help me out just bout it and was working till this thanks............

[jenntek]

Try master radio reset
Try resending service books
Try login to boostmobile, change your imei number
Make sure your sim card is inserted the proper way
Make sure your battery is fully charged
Make sure your OS install was clean
Look at your bb LOG (Hold ALT KEY and type LGLG no caps required)
Search your log file for errors.
Buy another sim card and see if that one works.
I'm out of choices for now.