
Hey!
A guy called Ian Cheyne posted this on a similar thread and it solved the problem for me instantly!
"I resolved my issue by putting the latest firmware .upd file on my RMX's SD card, putting it into the hardware, and updating it that way. There is a youtube video that shows this process, by a user, I believe it is titled "RMX-1000 Setup and Firmware Update". It is towards the end of the video that he explains the process of how to update the RMX's hardware using the hardware"