I wonder about the different versions of firmware. I have a server system with three pieces. The master is Zibabox 2 (fw: 1.3.144) and I also have a Zipatile 1 (fw: 1.3.144K) and Zipatile 2 (fw: 1.3.151ZE). What I can see there are new firmwares but they all begin at 2.something and there is no information that there is new fw available? Should I upgrade to the offical versions?