Currently all samd21 chips can support USB host mode, when you press reset twice with 2 seconds these chips can show up as a usb device and fat file system. It should be possible to mod the boot loader on these for using with the ps4 9.0 hack, I am just wondering if anyone has tried this yet, they could also be used remotely and forced into this mode via esp8266 or raspberry pie etc.. Has anyone tried it yet? OpenOCD can be used to upload a bootloader via a raspberry pi.
https://learn.adafruit.com/adafruit-trinket-m0-circuitpython-arduino/uf2-bootloader-details
https://github.com/adafruit/uf2-samdx1
https://github.com/microsoft/uf2
https://learn.adafruit.com/adafruit-trinket-m0-circuitpython-arduino/uf2-bootloader-details
https://github.com/adafruit/uf2-samdx1
https://github.com/microsoft/uf2
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