Wow...I've seen people blindly misassuming that "teh firmware is where its at", but you take things to a new level.
1. the firmware number you can find in the system menu or in things like syscheck refers to the system menu. And the system menu only. It has ZERO influence over how well games (real or backup) are played. If you bothered to even read a changelog, you would know that nintendo did almost nothing but antipiracy attempts between 4.1 and 4.3. So without even knowing what your original problem was, I can tell you that it wouldn't make a difference.
2. an "official firmware update" not only updates the system menu but your IOS as well. I'm not sure, but I doubt that MMM does that. In other words: you missed on the only interesting part of the way an official update works.
3. say...you DO have IOS80 installed, right? If not...then you should REALLY be glad that non-related issue happened, because you would have downright bricked your wii (the system menu of 4.3 works on IOS80...good luck trying it to run without the proper IOS).
4. priiloader overwrites the system menu. As such, reinstalling/updating the system menu will remove priiloader. In fact, that "v54450" version is probably priiloader instead of the system menu (take a look at
the system menu version numbers...they're barely above 500).
5. problems with the ticket number are because you're trying to install something illegal on your wii. Just make sure you use a trucha bugged cIOS and it won't complain.
I could go on about things like how Waninkokos cIOS are outdated now, or that the color of the wii means didly squad, but the bottom line is that you're going the wrong way about things. Please do your homework before you go about these things. A wii isn't hacked in the same way as other consoles.