Has anyone actually confirmed which firmware version properly supports the Pylontech BMS comms on this unit? I've seen a few threads on other forums where people have flashed various versions and still end up with the SOC reading stuck at a fixed percentage or bouncing around erratically.
I'm considering one of these for my shepherd's hut setup alongside a Pylontech US3000C bank, and the BMS integration is non-negotiable for me — I need accurate SOC data for the low-battery alarms to function correctly as an emergency backup system.
A few specific questions:
- Is there a verified firmware version where the
PYLprotocol actually passes SOC through correctly, not just voltage/current? - Does SRNE have a UK distributor who can supply firmware directly, or is it all sourced through Chinese channels?
- Are there any known risks flashing this unit via the RS485 port vs whatever SRNE's own tool uses?
I've read conflicting things about whether the HF4850S80-H uses the same firmware branch as the earlier HF4850U80-H, which makes finding the right file a minefield. Victron kit tends to have well-documented firmware trails — SRNE feels considerably murkier.
Anyone who's actually got this inverter-charger talking properly to Pylontech (or even Fogstar's BMS), I'd genuinely like to know what your working configuration looks like.
