The forum has a lot of info providing lot of past user experiences as well info related to these tools and Intel Management Interface… i do suggest to start reading/learning first, cause this tools will not care of what cmds and data you provide them, a tiny error can lead to a death system/un-bootable.
The “Clean” guide is for reparing a corrupted Intel ME FW image on the system, it is NOT needed for upgrading the FW itself, so if no experience in this area do not engage such actions and try to manually update only the MEi FW
Does the system behaves strangely? Do you see 0.0.0.0 in ME displayed in bios? Do you have an exclamation mark on Intel ME windows device manger? If so then the image is corrupted (usually…), a part form that, the cleaning is not necessary/taken risks to the system.