January 5, 20242 yr 2 hours ago, wadih murr said: EASUN SML II 5.5KW That looks like it's an Axpert VM II clone from the early days of EASun when they were just a clone maker. They are either lying about the power specification or have wrung an extra 10% out of the 5 kW design they copied off. It's possible that Axpert 5 kW 20.xx firmware (e.g 20.13 or 20.14) might work, but it's also possible that the firmware can't be updated at all. It's very risky, and I don't recommend it. Why do you need this firmware?
January 5, 20242 yr Author HI, Thank you for your help i have problem with MPPT controller the voltage start 120vdc and after 2 hour junp to 365 vdc or when i turn the PV CIRCUIT breaker off then the voltage up to 365vdc i have 8 panel thank in advance
January 6, 20242 yr 18 hours ago, wadih murr said: i have problem with MPPT controller the voltage start 120vdc and after 2 hour junp to 365 vdc Ah. Unfortunately factory firmware won't fix that, you need patched firmware. But there is no patched firmware for 20.xx anyway. Perhaps one day.
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