Some one?
You need physical access to do the update.
Updating from 19… to 26… is not possible, that are different hardware versions and the software is not compatible.
2600… would be a 12/3000/120-50.
Where do you see the 2600?
E-plex and Victron seems to be a very old cooperation, the documents I can find are more than 15 years old.
It’s highly possible that newer HW isn’t compatible anymore.
I repaired the e-plex system on this boat, blocks 366 and 407, as well as the blocks responsible for monitoring the inverters, when I was invited to deal with the inverters, one of them already had a higher firmware version, and I also purchased new inverters. The question is more about the availability of the same firmware version as the one on the inverter, and it seems that it is being flashed using a programmer, as it has an extension “HEX” that is not used in victron’s firmware.