I have copied it to Applications now and it works! Why is that?

on an unrelated subject: the display of my M5Stack Core (not the 2) only works once every day at the first startup. After a reset the screen is black and stays black. I have to turn off the unit and wait until the next day before the screen shows the last program I have flashed again. Any idea?

I have tried it on a windows laptop and now I see that the osx version doesn't show the available apps. See screenshot below. Windows is working and I am on the same network with both laptops

Hello,
Today tried to use M5Burner on my Mac osx Catalina 10.15.6. M5Burner starts, shows a screen but this doesn't resemble the screenshots on any forum or tutorial and I can not select a firmware to flash.
So I have found https://github.com/m5stack/M5Cloud/tree/master/firmwares . Is this the firmware to use for UIlow and can I program it with esptool ? Is it already compatible with the core2?
Thanks in advance for shedding a bit of light for this cool product with a lot of confusing documentation..