Hi, I purchased a Raspberry Pi4B 2G and a Chinese MMDVM at Ebay. Set up the Pi-Star ok but the MMDVM did not start (no Sync blinking).
I flashed the MMDVM with: sudo pistar-mmdvmhshatflash hs_hat and it started working great.
Every time I turn the Pi-Star/MMDVM off (remove power) and power back up ...