Jim Lee
New Member
Has anyone had success (or failures) updating the firmware version on a Growatt SPF 5000 ES (US model from Signature Solar). I have 4 - 5k Inverters ,they have been working for about 2 months now. They are supposed to start up when PV power is turned on to them. At first 3 of my 4 inverters would start up with PV power, but 1 inverter would not start up with PV power. All worked ok after the inverters were turned on so I've been running them that way, however, recently I've noticed that 3 of the 4 inverters now wont start up with PV power, but work fine if the one that does start up with PV power is set as the Host. SS is saying I need to update the Firmware on the inverters. My current versions are CPU1= 040 05 7.01 and CPU2 = 041 05 7.01 on each of the 4 inverters. I've seen the video put out by SS. they make it look simple to do, but I've heard horror stories on line about updating. I'll be doing the upgrade soon (I had to buy a laptop first and get it ready)I would love to hear if anyone has been successful and does the up date get corrupt and have to be reloaded often?