Current JB 5.0.2

I missed the boat on upgrading to 5.2, and am currently at 5.0.2 jailbroken ATV2. Is it possible to get a jailbroken 5.2 onto my device, and are there any instructions? I read about these SHSH Blobs or something, and I don’t really know what that is, but I feel like I don’t have one for 5.2 since my device never had a JB 5.2 on it. 

So I guess my question boils down to this: is it possible to go from jailbroken 5.0.2 (iOS 5.1.1 - 9B830) to jailbroken 5.2 (iOS 6.1 - 10B144b) right now?

 

If youve got it jailbroken on 5.0.2 stay with it, dont bother trying to upgrade it, just update XBMC if thats what you want to do, via NitoTV