Errr.. I just got a red ds lite and I got an r4 as well. When I put everything in, there was an error in chinese that said something like "wrong hardware". Does anyone know what this problem is and if it can be fixed?
Are you using the right kernel for your R4? I'm still new to the R4 and haven't even received mine yet, but perhaps you're trying to load an English kernel onto a Chinese R4 or vice versa?... I'm pretty sure the Chinese R4 can only load the Chinese kernel, while the English one can only do English, French, and Korean, but I might be wrong. :/
r4ds.com, at the top right you will see english button which will load the site in english, go to download and grab the chinese, otherwise you gotta patch the english kernel to work on a chinese R4.
The link pika gave has the Chinese kernel (aka firmware). You can also get it from the official site at http://r4ds.com/download.htm You can't click the English button on top, because that shows all the downloads that work with the English R4. You have to navigate the Chinese page to get files for a Chinese R4.