I have updated to the newest Xbox Live update, my TS-H943 is still working, but has Xtreme firmware 1.00. I was trying to update to 4.2B, but unfortunatelly my SATA Controller (with VIA6421L chip) cannot find it anymore. I did exactly same procedure as with 1.00 (disconnect pc drives, disable IDE, disable onboard ATA, boot pc to dos and then plug xbox dvd drive in...), but it still says "No drive found". Do you think it might be caused by Live update?
I really need to update, because sometimes I have to open/close dvd drive 10 times before it finds security sector and boot a game and this has been fixed in newer firmwares. And there are many more reasons to update.
Please could anyone help me?