I'm trying to program a board I designed with an ATTINY1616. The schematic is shown in the photo. I'm trying to connect an Arduino Nano. +5V and GND are shared, while the UPDI pin is connected to the Nano's D6 with a 470Ω resistor in series and a 10kΩ pull-up. Is there any mistake? I can't establish communication. I have, of course, flashed jtag2updi from https://github.com/SpenceKonde/jtag2updi.