Hi Rapidroll,
I understand I have to apply patch to unlock.I got an impression the tutorial is not only doing the unlock( may be I'm wrong).The reason why I said "I actually need to just Unlock the SIM lock of a CID53 Red C510 .I don't want to add or change any features or skin of the phone " is I wonder if it will be simpler to just unlock it instead of having it face-lift.