For about 3 years this is the first time I see something like this. Is it safe to go ahead with it?
I remember there was a case where ubuntu OS update bricked some lenovo laptops.
21 Answer
There is ALWAYS a risk with ANY firmware update that something can go wrong, especially if you don't let it update the way it's supposed to. That being said, I haven't seen any particular issues when I looked up the firmware mentioned here.
If you're paranoid, make sure the computer is plugged into a battery backup and have your most important files backed up on an external hard drive and with a reputable cloud service (google drive gives you 15GB free per account).
If I were you, I'd just update, I haven't really had many issues personally with Ubuntu hurting anything and I've run it on a couple of laptops, including my daily driver I rely on. Besides, keeping firmware up to date is very good for security, especially with all the Intel and AMD chip vulnerabilities being found these days.
2