What exactly are you trying to do?
You're fortunate because G-010S-A has maintenance access, your PLOAM/SLID password can be changed there.
To put new sn CTOC88faca63 use ritool
ONTUSER@SFP:/rom# ritool set MfrID CTOC
ONTUSER@SFP:/rom# ritool set G984Serial 88faca63
To put PON MAC Address
ONTUSER@SFP:/rom# ritool set MACAddress a8:24:ab:cf:22:aa
Don't forget to log your actual configuration
ONTUSER@SFP:/rom# ritool dump