wanDUH's blog: "my rants!"

Hey so I've been tryna look into getting my galaxy note 4 update...cuz I have an at&t phone that's unlocked and I'm on tmobile. So I don't get any software updates.  I think the last update was in 2015. So everything is super outdated. Im also on Lollipop. So I heard that you can go to best buy and the Samsung experience people could update it for free..updating it to Marshmallow.

But see, I really love the note 4 and I seriously do not anything to happen to it where it'll fuck up one way or another...if I did update from lollipop to marshmallow...is that gonna make my phone overheat or freeze, or just crash or anything? Does anyone know??

 
I really really wanna play PUBG  without the game crashing....

Does anyone have knowledge or legit advice?

SoOooOo....Is it recommended to update?? Since my security is also outdated as well...HAAAALP 
Thanks in advance. And I appreciate.