i just got a r4 ultra and a micro sd chip but my computer sais it cant open some file that i need to get it to work...i know its pretty undescriptive but how do you get your computer to open the "kernel file" from r4ultra.com...???
Go to the forum in my signature and download the correct firmware, it is usually in a standard zip format that windows can unzip without other programs, if not find WinRAR (use google) and unzip with this. That should give you all the bits to add to the card.