macOS Monterey (M1) returns error Access Denied, or DAC unavailable after flashing

[jseaber]

When using macOS Monterey on an M1 based machine, error "Access Denied" may be returned when attempting to use the --download command more than once or after using --listdevices: libusb lacks access to claim the DFU device via libusb_claim_interface(devh, 0), which returns error LIBUSB_ERROR_ACCESS.

Current workarounds:

• Reboot the mac and USB DAC after flashing
• Use a different USB port after flashing

This issue does not occur under macOS Big Sur, or under Intel based Macs running Monterey for the same target hardware.

Edit: Allowing downloads from anywhere resolves? Why?
https://macpaw.com/how-to/allow-apps-anywhere#:~:text=Go%20to%20System%20Preferences%20%3E%20Security%20%26%20Privacy%20%3E%20General.,download%20any%20and%20all%20apps.