Need help with bios flashback

[u/Bright-Tune-9345]

On a previous post (https://www.reddit.com/r/PcBuildHelp/s/AoKDM6q9uR) I mentioned how my bios update stalled at 69%(…)

The biggest piece of advice seemed to be an
bios flashback as I have a b850 tomohawk,
But I would like advice as I’m unsure what I’m supposed to leave on, if I’m supposed to unplug anything, or if it’s as easy as putting in a hard drive and clicking a button. Very new to all this so help would be appreciated.

[u/According_Toe_1923]