Richard Posted May 3 Share Posted May 3 Transformer polarity error...? I've watched the Rev A/B to Rev C upgrade video at least 8 times... Connections are all correct...same as in video... Getting a transformer polarity error on power up... Connected to Wifi... Inverter says it needs a firmware update... Download succeeds... Install fails with unrecognized bios (?) error...? Quote Link to comment Share on other sites More sharing options...
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