There’s a long history of updates and upgrades that made the things not only bad, but sometimes worse or even some other times catastrophe.
Firmware, OS, bios, drivers, whatever.
I am a fan on “update soon, update now” for most of my setups, but during these last months I postponed the update from a minimum of 10 days to a top of 4 months for avoiding these conditions : i cannot go to premises in case something goes wrong or i don’t have enough recent backup of device/OS/server to allow the upgrade or the rollback. None of this setup is virtual so “snapshot not an option”.
If the update is solving vulnerabilities or other issues related to security i am eager to update as soon as possible. At the end of this post i will update the software of an exposed NAS. Out of working time, out of interrupting attivities, five days later the announcement of the producer.
I don’t think that you have to agree with me or do the same thing, it’s just a way of think. I hope that at least you will understand why.
I had to remotely update a firewall few years ago, bricking it. At 3AM in the morning i’ve been woken up by a phone call, and at 5AM I were on premises on reset, reflash, reconfigure. The next day the producer released another update of the firmware solving the issue I encountered…