Just done a successful upgrade on my 03/2005 (UK) 4.8is with the software downloaded from this post

I must admit I was a bit nervy about doing this myself at first.

I work at the local BMW dealer and thought at first I'll just get them to do it since I am still under warranty just in case it doesn't work and I have to take it in to them and have to explain what I done.

But I thought, "No way. He who dares wins!" and so I followed the instructions given here to the letter and a few minutes later I now have the latest version of the software appearing to run like a dream.

The only difference on mine to the screen shots shown earlier in this post was that the language choices on mine were different (D;GB;F) and it only took a couple of minutes max.

Not having used it extensively (since the upgrade a few minutes ago) I don't know of any potential side effects, but it looks good so far and I'll post any percieved 'glitches'.

Thanks again UCrewX5 and Ferri