I fixed the issue with the one SD card I had. It was a problem with the sector write (that’s the reason it works for firmware updates, as the read works okay).
I’m not sure if it helps you, as some SD cards don’t follow the SPI specification properly.
I also added some EDL diagnostics for 3.051
https://www.ecumaster.com/files/EMU_BLACK_V3/edl_firmware_1_20.zip
We will also buy some of the popular available cards, make tests and publish a list of compatible cards.
RELEASE NOTES
Version 1.20
- improved SD card compatibility
- updated communication protocol between EDL and EMU BLACK (requires EMU BLACK firmware version 3.051 or higher)
- added diagnostics via EMU BLACK log channels (EDL group) (requires EMU BLACK firmware version 3.051 or higher)
- fixed bug where the green status LED incorrectly indicated active recording after SD card removal