Hello @MiAutomations
M5Dial contains an M5StampS3 which can be forced into download mode via button. See documentation here.
To enter the download mode, press the G0 button on StampS3 at boot time.
BTW: UIFlow2 firmware is not the M5 Stack Dial Demo which was pre-installed on M5Dial.
You can find the M5Dial demo code here.
Thanks
Felix