Do I need to back-up before I upgrade software on my MacBook?
Do I need to back-up prior to installing updates on my OS?
MacBook Pro 14″, macOS 12.6
Question marked as
Backing up is a good idea and should be done on a regular basis.
You should also backup before undertaking any task that puts your system at any level of risk, so yes.
But "need" is relative. If you have no important data, and aren't concerned about your system's continuing operation, then that need is absent, so no.