Firstly, many thanks to mauifrog for producing a very easy to follow guide, apart from a little hiccup with the wii not reading my SD card, everything went smoothly.
My kids from time to time use the Nintendo channel to download demo's onto their DSi's, before we go and buy any game they think they want, it's been a while since it was last used, but I tried to go onto the Nintendo channel, and it said I required an update, and also a Shopping Channel update to download it, so I followed this guide and I now have the latest shopping channel.
Since I can't find a guide here for updating the Nintendo Channel, is it safe for me to now download it from the shopping channel? Also I can still download any of the other free channels from the shopping channel when they require updating? I think the answer is yes, but I just want to make sure before I do it.