I updated to 1026 against my gut feeling as 1025 with the Smart Hub update has fixed all issues....but curiosity got the best of me (thought there might be embedded updates for a better picture).
About 7 hours after update, my TV kept displaying a lost network connection (every 2-5 minutes). All other wifi devices (including 3 other AV devices) in my house have not had a problem. I have no idea if this is related to the 1026 update or pure coincidence.
I actually had this issue many months ago after a firmware update (can't remember which version) but a full power reset took care of it. This time I did a full power reset, then the problem remained for about 20 minutes (4-5 more flashes) then has yet to return...so I'm hoping whatever it was has settled down. I guess this was just a reminder to complete a task I wanted to do a few weeks ago - remove the TV from the network.
I'm done with firmware updates unless I have a specific issue that requires the update - or there is an overwhelming agreement (and documented within firmware notes) that it will improve picture quality. I also do not use Smart Hub on the TV for anything as I have better devices for streaming video..
Bottom line - very happy with the set and have no reason to try and fix something that is not broke moving forward.