FIR not required.Remove sim from Phonecall CC and report that ur phone is stolen......then go to VF shop,say that SIM has been blocked by CC as its stolen and u need a new SIMthey will give it FREE without the FIRBut i suggest U wait coz like Viralbug said,I think they are still giving out Blank sims as replacements in Vashi VF shopIn Borivali VF shop New Connections are getting the new Red and white VF SIMS