QUOTE(vicfalc09 @ Nov 3 2006, 02:49 PM)

I updated on my new console first the flashed to 4.2b and had no problem and my drive was an ms25. So i dont get why everyone is saying to go 3.3 with this drive.
Because, if M$ has a clue when (with which serial number) they changed from MS25 to MS28, they can find out that the firmware was flashed.
On the other hand, if the new update stores some information about the firmware (checksum, return values, version) then it may make more sense to flash before the upgrade.
Since it certainly can't hurt to flash before, I would recommend that. I'll be in that position shortly and I will flash first, then update.