iPhone 3GS old or new bootrom?

[Crich92]

I just picked up a 16 gig 3gs. I'm a bit confused though. It is an MB model with 25 as the forth and fifth digits in the serial number so shouldnt that be the old bootrom? but I hooked it up to windows in dfu mode, checked the device manager and its says 359.3.2 which is the new boot rom. How does this make sense?

[iYeow]

You also need to look at the 3rd digit. If it is 9, it is 2009. If it is 0, it is 2010 which explains why your week 25 is a new bootrom.