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January 20, 2026 4:11 am
- Do software updates for inverters or batteries need to be done in sequence, or can you just upload the latest update? Thanks!
January 20, 2026 4:17 pm
That's a great question. To add to that I would like to know to update firmware on a remote system.
I have a system that I would like to perform a firmware update on the gridboss and flexboss21. The IT infrastructure does not have backup power, meaning if the inverter or gridboss turns off it's output during the update I will lose connectivity. Will this be a problem? Will I need to connect a UPS to the modem, router, bridge, and access point while performing the update?.
January 21, 2026 9:16 am
Back in October we updated to the 2525 Firmware on the Inverter. Over the next weeks we found MANY anomalies that EG4 could never explain.
With the guidance of their Level-2 support we believe that the newest Inverter firmware was not tested with the old Battery Firmware.
That leads us to now ensure that we upgrade Battery Firmware first. We will be attempting this in the next few days ... however we are concerned that @Solargear posted that they lost the historical data when upgrading their batteries.
https://forum.eg4electronics.com/community/tsb/field-impact-notice-48v-batteries/#post-20480
So our plans are to wait to hear a confirmation or resolution before doing any of the upgrades.
January 23, 2026 7:07 pm
@bobc
You can update batteries and inverter to the latest firmware. no need to be done in sequence.
