Button Combo to do a hard reset?

[Earmuffs]

Sorry if this has been asked before but is there a button combo to do a hard reset on the Samsung Omnia?

My friend bought one second hand (the esn is clear) and as he buys a lot of phones some in person some off ebay I'm sure he does not remember who he bought it from or he would not ask me. the phone is locked and he does not know the unlock code. If there is no button combo is there anything else i can do before flashing a cooked rom and replacing bootloader (i only know htcs) would flashing a stock rom clear it (I think it would but maybe ominia?


Please no telling me to search I googled and I dont have anymore time to look as I need to feed my sisters kid