Below are some steps you can take to ensure that your WordPress upgrade goes smoothly (How to update WordPress + Plugins).
Upgrades and updates should be done during your off-peak hours (your low traffic time).
1: Back Your Site Up
Backups ensure that you have an immediate action plan should something go wrong.
2: Turn Caching Off
If you are using any WordPress caching plugind, (W3 Total Cache, Super Cache, Quick Cache, etc), deactivate to ensure that you aren’t caching maintenance pages during the updates and not interfering with the update process.
3: Update Your Plugins and Theme Framework
Update all of your plugins and themes before upgrading WordPress.
4: Update WordPress
Now it is time to update WordPress itself! Just click the automatic upgrade button and let WordPress do its thing. Sometimes it can take a couple minutes to complete, don’t get impatient if you see a momentary blank section within the dashboard.
5: Reactivate Your Caching Plugin
Reactivate your caching plugin and clear out/purge the cache.
6: Check Your Site
Take a minute to look over your site and visit a few pages and posts. If something isn’t working properly, it is best to catch it now instead of later.
Contact us for a quote if you need assistance upgrading WordPress