As I understand it, in order to manually update the microcodes through the HxD editor, I need to know the address of each microcode so that I can manually replace it
For example, the link that MeatWar gave above to Bios-Mods,
address : 225a0h - 22fbfh
But in the HxD editor, he did not find the value 225a0h. In that case, how can I find it so that I can replace the microcode?
No, thats on that model motherboard and example, linked, yours is different address on that module.
The tool MCExtractor/MMtool 3.x can be used.
Keep in mind ALL info on that linked thread, all of it till the end, it needs adjustments, there was no report of any user later on.