Create Date: May 22 2013 3:57PM
The earliest units of some switch models come off the production line with a beta version of XOS, written to enable them to boot and function, but the intent is that by the time customers receive the switches there will be a full production version of code available. The first X440 switches I received, for example, had beta code, but by the time I had them in my hands there was a non-beta XOS available to install on them before I installed them in production. This is not uncommon among switch manufacturers, in my experience.
We have a lot of X440 units in production now, and I'd highly recommend the latest XOS patch - 15.3.1.4-patch1-10. It contains several fixes specific to the X440. You can install the patch and SSH module at any time, and schedule a reboot during a maintenance window via the "reboot time ..." command. You can enable the SSH service once booted into the new version.
Hope this helps! (from Ansley_Barnes)