Hi there, after leaving my 2 WPMUDEV sites unattendend for the past 5 months, I would now like to continue working on them but before I do this I would first like to have them up to date.
I am super unsure what needs to be done to update the wordpress install, wpmudev plugins and non wpmudev plugins and wpmudev themes correctly.
I messed up once already by automatically upgrading my WP install last year, I got lucky that my host had a backup.
Is there a step by step guide on how to do this right? And how to properly do backups?