Interesting fact is with "debug-on" (can be checked with -c option) we cannot flash any program with the ISP bootloader over USB as it returns an error
So to flash again the program it is required to set debug-off and then we can flash with ISP bootloader over USB
Interesting fact is with "debug-on" (can be checked with -c option) we cannot flash any program with the ISP bootloader over USB as it returns an error So to flash again the program it is required to set debug-off and then we can flash with ISP bootloader over USB