You should erase your email name in this thread, otherwise naughty robots will disturb you...

I put an English-subtitles explanation hereSymoon wrote: ↑Sat Feb 04, 2017 1:18 pm...Kenneth show his SD card reader project (see http://forums.oric.org/t189-rs - in French)
It's more handy for updating, you don't need to erase the software with an UV lamp to re-write. I suppose that the EEPROM contains also the update microprogram.