Just tried to upload the latest firmware (v4_082). Upload with MIOS Studio (2.4.6) stops at a few percent and reports:
“Upload aborted due to error #14: Invalid SysEx commandNo response from core after 16 retries!”
Any ideas ? Also happens with older firmwares …
/edit: on STM32 core that is.
Solved it!
I tried to upload the latest MIOS32 bootloader, but with the same result.
Solution (after a bit of thinking and reading):
WIth the bootloader hold mode enabled (J27) I was able to update the bootloader and finally the new firmware.
Yes, bootloader updates from pre v1.010 versions can be troublesome… :rolleyes:
Fortunately there are no potential incompatibility issues anymore with v1.010 and higher 
Best Regards, Thorsten.