I cant tell if a DMS is more expensive than a Messiah - I dint found a single retailer with a Messiah yet. Another reason to get the DMS Chip would be that the green DVD-Playback would be fixed - AFAIK impossible otherwise on a V7 Board( the 2.13 DVD-Player aint supported by my RegionX CD either

)
On the sticky-Thread in this forum, the DMS3 V1 is worse than the Messiah Chip, so thats why im cautious.
I disconnected the Magic3.6-Chip when I first encountered the blue-screens. Without the Chip everythings fine, I can attach one of the connectors without getting trouble( or any of the Mods functions ) - If I attach the connector for the Bios-Chip( the Clip ) the behaviour is the one I stated.
The solderpoints are all cleanly and carefully soldered, most of em I additionally did verify with a Multimeter( where I could find an additionally bridged Contact ). The only thing that could cause trouble is the Bios-Clip, I used the simple Diode-Tester that came with the Chip to verify the Connections of the Clip - seem all fine. The Clip is also attached tightly. You are serious about the cable-length causing trouble? I somehow dont think the Cable resistance is significant on this lengths. Or is this an issue of interference?
I may solder the Bios-Contacts directly soon, but after that Im kinda helpless - and I doubt it will fix anything.
Im thinking if there is the chance to get the cable-connectors of the Magic3.6 Package, so that I wont have to solder on the PS2-Board again( im sure most Connects are the same ) - I did a fairly good job on the tiny Connects this time.