I bought two Samsung SH-S223 drives in a span of two weeks and I realised that they were different.
First drive : SH-S223F, FW:SB03, Made in Indonesia - March 2009 (HW ver. not available because the drive is already installed in my friend’s computer)
Second drive : SH-S223B, FW:SB00, Made in Philippines - April 2009, H-W A Ver. B
Searched around all Samsung websites (including Samsung India) and I don’t see any drive description for the SH-S223B. It is only found on the Samsung Optical Disc Drive website (http://www.samsungodd.com) and the latest firmware released is ID00 (labelled India distribution).
I am suspecting that it is either a ‘newer’ drive or it is an OEM drive. If it’s the former, I am a bit confused as to why would Samsung label a newer drive with an earlier letter (from F -> B)?