Since EleksMaker Z's command line seems a bit damaged: I managed to reprogram the Mana SE board with the following command (one single command line):
avrdude -carduino -b57600 -patmega328p -P/dev/tty.wchusbserial144420 -Uflash:w:ManaSE_v3.7.hex:i
Thank you so much! It worked fine and almost one year after I purchased Eleksdraw I'm making progress.
I also installed the driver for Mac OS but I have absolutely no idea how to get it run. I thought it will be installed as a new Printer. Can anybody give me a hint how to proceed?
Thanks in advance