Bad bad IMEI. Can i still flash it to a different provider?

Iphone 4. I can unlock it/jailbreak it myself. I have done research but nothing solid. Please help.

Added (1). How about to metro pcs, page plus, h2o or any other prepaid viruses

All phones must have a clean ESN/IMEI.

A phone with a bad ESN/IMEI will not be able to be activated.

There's no valid information in terms of unlocking iphone 4 unless the software is below ios 6

and depending on the network you can be able to unlock it and use with international carrier or other carries, if you have the phone unlocked and have active sim card once you put it on the phone it should work.