Factory testing: can we access "tinker" functions via USB for an unclaimed device?

[boddeke]

ok, black magic? this seems to work to get into dfu mode.... why does this work??

Force DFU using usb

You mentioned that you used macOS in the past. You can put a device into dfu mode with: ls -1 /dev/cu.* | grep "usbmodem" # Find device(s) stty -f /dev/cu.usbmodemxxxx 14400 # Put device in DFU mode