From re- + unlock.
reunlock (third-person singular simple present reunlocks, present participle reunlocking, simple past and past participle reunlocked)
- (transitive) To unlock again.
1996 October 26, Kjell Nedrelid, “Qcrack Qcrack !!!!”, in rec.games.computer.quake.misc[1] (Usenet):Unlocked shareware-version, then he can dial again and reunlock it for free...
2001 May 19, lean...@sno.at, “3210 killed”, in alt.cellular.nokia[2] (Usenet):Then I played around with a nokia proggie and locked it to a network (I thought it wouldn't work). As I tried to reunlock it, it died.
2007 October 9, Bi0, “iPhone....pitanje”, in hr.comp.mac[3] (Usenet):These methods will NOT downgrade your baseband or reunlock your phone.