G:\avrdude7.3>avrdude -C avrdude.conf -c snap_updi
-vvvv -p avr32DD20 -B 4.0 -e -U flash:w:flash.hex:a -U eeprom:w:eep.hex:a

avrdude: Version 7.2-20231215 (c7155f9)
         Copyright the AVRDUDE authors;
         see https://github.com/avrdudes/avrdude/blob/main/AUTHORS

         System wide configuration file is G:\avrdude7.3\avrdude.conf

         Using port            : usb
         Using programmer      : snap_updi
         Setting bit clk period: 4.0 us
avrdude: jtag3_open_updi()
avrdude: HV UPDI support: 1
avrdude: usbhid_open(): probing for max packet size
avrdude: usbhid_open(): setting max_xfer from DAP_Info response to 64
avrdude: found CMSIS-DAP compliant device, using EDBG protocol
avrdude: jtag3_getsync()

avrdude: jtag3_edbg_prepare()
avrdude: jtag3_edbg_prepare(): connection status 0x01