OK, so I have found the service update disks for the NTG2.5 from MB website in Germany (so no dodgy disk image downloads here), but they only lists the service update disk images for the W171, W211 and W203. Although under different names, the images for the W171 and W211 look identical in size while the image for the W203 is much larger (about 3 times larger). Sadly I cannot find a service update disk image for the W169 on the MB site and was wondering if this is because the 3 listed images covers the entire NTG2.5 range? If so, would the W171 be the correct service update disk image to use? I don't really want to brick my NTG 2.5, but getting a dealer to update the firmware seems too painful - much easier to do the update via the Engineering/Dealer menus or possibly via my (offline) star. Anyone knows or care to comment?