Is it possible to flash an iPhone 4 from Sprint to Cricket without unlocking it?

Is it possible to flash an iPhone 4 from Sprint to Cricket without unlocking it?

Sprint iPhone 4's are cdma only thus can't be unlocked, so yes you would need to flash the iPhone 4 to cricket.

Cricket is killing off CDMA would be pretty pointless to do it.

Sprint iPhone 4 is only CDMA and can't be unlocked.