Use this installer directory together with its payload subdirectory.
Firmware map: V8B5 (0x08B5). Installer version: V08.
Follow START_PL.txt (Polish) or README.txt (English).
Update existing installation: sudo python3 install_M2_UPS_PMH.py --upgrade
Preview: sudo python3 install_M2_UPS_PMH.py --upgrade --dry-run
Check: sudo python3 install_M2_UPS_PMH.py --check
Uninstall: sudo python3 install_M2_UPS_PMH.py --uninstall
No firmware image is installed by these commands.

V8B5 adds Advanced external ADC range selection at 0x6B:0x08 and voltage at
0x69:0x12. Connect only EXT0 (P2 pin11, 0..5.2 V) OR EXT1 (pin12, 0..32 V);
leave the other input disconnected. Configurator06 and status0B describe it.


This corrected V8B5 rebuild requires R75=1.00k; gains EXT0=2.4, EXT1=20.6.
D19 protects UART RX (P2 pin10), not the analogue input. Leave D19 unchanged.
