Ok I've download the following and need some help as to where to from here...
...and I have a 32GB SanDisk Ultra MicroSD card. The original card that was supplied by j_m_ must be written in a language foreign to Windows10 as all my PC wants to do is format it when inserted. I plugged it in, in an attempt to to see the arrangement of the existing files, as I wasn't able to access that information I removed the card.
When limpan states "have you tried flashing the image file to another SD card", I assume he means to copy the RunDMD_B134.imgc image to another card? So I used HDDRawCopy1.10 to do just that. Selected the SOURCE file of RunDMD_B134i.imgc, selected the TARGET as the USB SD Card and away it went copying the files to the SD card. Once completed I removed the SD card and inserted it into the run-dmd pcb and switched it on. Came up displaying horizontal dashes across the screen and went no further. Powered down and reinserted the original card and the clock booted up fine.
What am I doing wrong? Was my assumption correct and doing what I described above correct? If not, please help me by providing some instruction as to what is required to flash the image as limpan tells me to do.