I keep trying to join friends and. It doesn’t work. It says that I don’t have the same version. And I don’t have an update. I have reset my console multiple times
Might just be that the update hasn’t made it’s way to your area just yet, propagation times can vary sometimes depending on location. Give it a little while and then try resetting again and see if you get the prompt
A hot fix was pushed out today, which probably means you’ll need to update Halo 5 in order to play with others. If the update isn’t automatically starting for you, go to “My Games & Apps”, scroll down to “Updates”, and see if Halo 5 appears there. If it doesn’t, you may need to clear your console’s cache (hold the power button for like 10 seconds until the console powers down, or turn it off, unplug the power for 30 sec). If you’ve already tried that, then I’m not sure why your console isn’t noticing the update.