QCan you give us more details? How does it get put into reset mode for flashing? Is this a custom pcb you made, it doesn't look anything like the trinket m0 ?
you need to layout them with the same gpio,can you flash the bootloader? just flash it to a trinket m0 bootloader is OK,G18 and E18 is the same usb D+ D- gpio,but if bootloader is difference. the arduino Port D0 D1 D2 is differenceCan you post your CURRENT.UF2 file please, I'm trying to test my own board - also using samd21g18a - but can't use the sam21e files as the code for those doesn't work on the sam21g, I can't get it to send the payload to the switch - but the trinket I have works fine.
they have the same bootloader?If I dump the trinket flash that works with sxox payload - then flash that dump onto sam21g18a - and use pins 34/33/gnd as D+ and D-, It doesn't send the payload? (even though connected to a pc these are the correct pins to use for usb as I can see the board as trinketboot)
they have the same bootloader?
Your dongle looks identical to this: https://www.aliexpress.com/item/dea...h-RCM-NS-Short-circuit-tools/32908068356.html
As found by @kristiansja in this thread: https://gbatemp.net/threads/the-chinese-have-created-a-modchip.514842/
Did you make this yourself and list it already?