Honda Radio Code

I have 2 radios, need code
serial no here,

P/N:39101-S84-A510-M1
REF.NO.:MU910AA
s/n:BLB21063295

P/N39101-S5A-A610-M1
REF NO.:MF721AA
s/n:DDZ25349917C

please help
thanks in advance