Thanks Jochen - great to know. So thats why the V31 disk wouldn't downgrade the V32 software. I'll try it with v27 tonight.

Didn't quite get the part about losing widescreen nav (not that I use it normally) but I'd miss the ETA detail for sure. Upgrading back to v32 (English) from v27 should put these features back right?

My days of hacking the i-bus were long since my daughter was born - no time these days . Does Navcoder work just on the nav_sw software locally to the PC without the need to attach the pc to the i-bus?

I'll let you know how I get on with the v27 downgrade tonite.

Thanks again. Kev.