I gave up on DM5. Just couldn't get it to download all dives (measly 17dives on the Vyper), it would get stuck on "dowloading 2%". I have 64bit Business Vista, original Suunto usb cable, and the 2.8.28 driver. And before that I fought with 64bit Win 7 and newer/older & signed/unsigned drivers...... I think I got DM4 to work for a while with 32bit Vista, but then upgraded to 64bit systems, and it was all downhill and headache from there.
Installed Subsurface. Works like a charm.
Installed Subsurface. Works like a charm.