Mbaz88
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Mbaz88 got a reaction from inverterpp in Need correct firmware for Sunpolo 8.2 kW / Axpert MAX 8 kW (only showing HID, no COM port, F90 fault)Thanks a lot for the clear explanation, that really helps me understand what’s going on.
I checked on the inverter display and it shows: U1 30.22.0.
The model is a SAKO Sunpolo 8.2 kW (48 V).
Unfortunately, after only about 2 months of use it went into fault F90, just as you described with the clone detection. I have already tried flashing with different .inv files through HID USB, but every time it fails with the “Firmware update check ready error”.
It’s disappointing that the seller didn’t mention this, and after spending this much money I now realize they sold me a clone unit that locks up after a short time.
Could you please let me know if there’s a patched firmware available for U1 30.22.0 that bypasses the clone check, or if there’s another way to rescue this inverter?
Thanks again for your guidance — it’s frustrating what the seller did, but I really appreciate the help from this community.
