We recently inherited a few Avaya ERS3500 switches. Specifically, 3549GTS-PWR+ HW:03 models. They are stacked. The firmware and software on them are very old (FW: 18.104.22.168 & SW: 5.2.0.004). We’d like to upgrade them to the latest firmware/software (5.3.10) but I can’t seem to find release notes or some documentation that describes the proper upgrade path. I know the switches originally were purchased from Avaya before the business was bought by Extreme.
I’m wondering what the firmware path was for these switches. Can we do a direct upgrade from the current FW to the latest?
Thanks for the guidance.