Stacked gs748ts firmware upgrade

To be honest, I have a recollection of reading that also, and I can also recall attempting it and having it fail - the master updated and the slaves did not, and I had to update each switch separately - but - that was quite some time back - and it was more of "does this work" type deal - than a need to do it, I had two switches, for two different clients, in the shop at the same time, and was fooling around with the stacking before delivery. If the switches are that critical and you "do not want to mess with" them, then don't - what do you gain from the upgrade? Every firmware upgrade has some potential for failure - flash memory upgrades are a lot easier. and a lot less prone to failure than EEPROMs used to be, but, you can still lose a perfectly functional piece of hardware to a firmware upgrade.