I've got a Catalyst Switch:
Device type: WS-C3560G-48TS
Software version: 12.2(25)SEE-IP-BASE-CRYPTO
I'm told I'd better upgrade the firmware. So I've got to its page, that I suppose is here:
But I must admit that I'm very lost in this page. At this very moment of writing, it has 12.2.40-SE(ED), 12.2.25-SEE4(ED) and 12.2.25-SED1(ED) and those in "All releases".
My problem is that I don't know how to read those codes. What's the difference between SE, SEE and SED? Just some sequence code like 1, 2, 3? And I just need to download the highest one, ie 12.2.40-SE(ED)?
And when I click the it, I've got a lot of things. I'm just lost... Help, please
Btw, could anyone give me any link to any page talking about the precautions before upgrading the firmware, and the steps to do the upgrade, please?