O_o Wow... You sure there was no (magic wand) miss-click on the LG firmware thing? Mine's got an option to check, but no auto/forced updating that I can see. Doesn't mean it wont decide to bone me tonight just for saying that...But we'll see...

On J-Mac's Asus/Nvidia "issue", Lie. Seriously, just lookup the latest firmware ahead of time (so you can quip it off), and if it isn't applicable ... Just lie and say it's up to date. That way you can force them to either go to step two, page next, or at least "escalate" the issue up to someone brighter than a trained monkey. I'm tired of this Knee-Jerk flow charting "Support Tech" nonsense where their first response to any question is to update the firmware (see bricked machine commentary in earlier post).
HP is classic for this shit; 49 series "firmware" error ... Well lets update the firmware then... WRONG, WRONG, WRONG!!! Try cleaning/replacing the memory first because that's where the problem most likely actually lies. Firmware doesn't just up and break one day, and it sure as hell doesn't (read can't) wear out... Try looking at where the firmware is copied to at load/run time that will be an item that is (OTOH, classically) grenade prone.
I'd dare say that HP's "support " personnel have cost our company close to $3,000 in bricked formatters because of this reflexive answer in the past year alone.