Hi,[quote=KTL;2133392]The 845S seems to be a Samsung 203P from some past readings.[/Quote]At least the drive here (http://ci-wang.blogspot.com/2007/12/sony-dru-845s-20x-sata.html) is a TS-H653N (=SH-S203N). Look at the sticker in the 3rd picture.
There’s also a 842A available, probably another 20x Samsung PATA derivative.
Perhaps based on Samsungs second generation 20x drives…
[quote=trenzterra;2133427]If I crossflash, will my drive be bricked? Or I will only lose Lightscribe functionality?[/quote]There is always a risk to kill the drive by flashing firmware, especially since there is no Sony firmware available, so you couldn’t go back. Also, you must exactly know what other drive has identical hardware as yours.
You won’t lose Lightscribe capabilities since both SH-S203N and 203P support Lightscribe.
Please take your drive out of your computer and look at the tiny sticker at the back of the drive like in this picture. If the last line states “TS-H653[B]N[/B] etc.”, then it is a 203[B]N[/B].