Lg gsa-h12 or gsa-h22

i want to buy one and i want to know if there is a difference between the two of them

i bought gsa-h22n. can you tell were to get the firmware?

if there is instruction or pdf file look there for a link or url to the manufacture site and they should have support there for firmware update. if not look at who made your drive and go to there site and type your model number in and search if they have avaiable firmware update.

LG GSA-H12N burning test

LG GSA-H12N verbatim dvd+R speed support

lg gsa-h12n disc surface test