The order they are placed in, suggests the the 4.39 is at the level of the 2.41
http://cdr.cz/rekordery/sanyo/crd_bp1600p.html - Can you read Czech?
Looks like 2.41 may have been released to OEM's, perhaps becoming 4.39 for some daft reason?
2.43 - something to do with XP support?
Looks like 2.45 IS the latest, or are they suggesting the TDK Cyclone firmware?
I got Intertran to do it, BUT:
Probably to dajÃ avail as well as firmwary since TDK CyClone 321040
That last line doesn't make much sense
The other two are handled a little better, but not much!
CRD-BP1600P 2.45 bin 30.08.2002 (143 kB) Ameliorations packetovÃ½ write in, optimalizovÃ¡n write in within CD-RW recording medium Multi Speed: MBI, SKC; High Speed: Negotiates, SKC.
CRD-BP1600P 2.43 bin 17.05.2002 (150 kB) Support Windows XP.