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stefanoch

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  2. Voltronic VM III 5000-48 - firmware CPU 91.19

    stefanoch posted a topic in Inverters
    Hi everyone, I need your help. My Voltronic VM III 5000-48 was running on original Main CPU 91.19 and Secondary 102.70. I mistakenly flashed Main CPU 41.63 (found on a distributor website). The flash was successful, but now the inverter is stuck on Error F51 (Inverter Over Current) immediately at startup, even with no loads connected. I understand this is a "false positive" due to firmware/hardware mismatch between branch 91.xx and 41.xx. I am looking for the firmware VM III 91.17 (or 91.19/91.20) to perform a rollback and fix the sensors' calibration. Does anyone have the .hex file for the 91.xx series for VM III? Thank you so much in advance!

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