Thanks for the reply. I have researched what I can and had already read that link - but thank you anyway. The Purion version 1.2.0.0 fitted to my bike when I bought it already had the eMTB mode instead of 'Sport'. I was just wondering what the latest version, 1.3.0.0 does (if anything at all tangible). My local bike store can't tell me but are willing to do the software update for £20. I'm just wondering if it is worth it?