fix mmdvm_hs v1.5.2 overflow No Responding problem
mmdvm_hs pcb v1.7 with 12.2880mhz TCXO fw v1.5.2 have overflow problem to see problem in pistar livelog
here is to fix:
wget http://www.taozhengbo.com/hs14.17-12mhz.bin
sudo killall MMDVMHost
sudo stm32flash -v -w hs14.17-12mhz.bin -g 0x0 -R -i 20,-21,21:-20,21 /dev/ttyAMA0