Can anyone please tell me how to reinstall a nokia n95 8gb symbian operating system?

Question

i bought this phone in uk. and i have been trying to use this phone in india. but the mobile phone was locked by the service provider. so i deleted the O.S. after that i been try to install the indian Operating System but this doesn't work on the phone i bought it from uk. so if anyone can please guide me how to get the U.K version O.S to my mobile. thanx