Liteon Cd-rom Ltn526d Firmware Query!

:confused: please can somebody enlighten me as I am a little confused,my afor mentioned drive has trouble reading some cd’s and I have just been on the liteon website hoping to find updated firmware for my drive,but to my surprise it says that my drive does not support any firmware updates it currently uses 9S01,the drive LTN526S has numerous firmware support,am I right in thinking that I can simply flash my drive with the LTN526S firmware and change my drives firmware,the only thing in stopping me is the liteon website stating that my drive does not support firmware upgrades,is my drive and the LTN526S the same in essence,many thanks for reading and I hope someone can help me.