Received the cart today and upgraded it with the latest firmware and kernel and then upgraded the 3DS with the latest update. The flash cart loaded after the update, so far so good. Will keep you updated if I run into any problems.
I couldn't see any feedback on the r4i-gold.eu version. Should have got the r4ids.cn version. Nevermind, if it ever shows up in the post I'll let you know how I get on.
I did see that, but I wanted feedback from users who have purchased the card. As its easy for a website to chuck up an update, but not link any videos of it working.