I have to renew my Indian passport.?
If you have the residence proof in Gujrat, you can get it renewed from there, but you will have to physically attend the process.Alternatively, you can get a bank account opened at Bangalore address and also get a voter ID in Bangalore ( there are agents who do it). These two proofs are accepted and you can get it renewed from Bangalore. Normally a passport should be renewed from a place where you are residing for past one year or more.