Key Bin Wii
So in order to not brick the wii, I would boot up the wii with bootmii and just launch preloader. Preloader is essentially the operating system for the wii. While in preloader you can use a wifi capable device to get online.
Once the extraction process is complete, youll be able to copy these files to your Wii, with some additional folders within them. If your Wii has a wireless connection, youll also have a folder which contains a third-party DLL that you can then use in your own applications (this gets created automatically by the process, don’t worry!).
As of now it seems that the filesharing feature of wud2app and its ilk is actually pretty problematic, and is rather unreliable for some reason, which is the reason I don’t think we’ll actually be using that to copy our files to the Wii unless we have to.
In order to work around the switch-aid unlocking limits, you can use a switch-aid for the Wii to give you additional switch IDs. When using the switch-aid, it does not activate the eShop, so no need to worry about unlocking the eShop for that. It will just give you extra IDs.
Navigate to the switch-aid folder on your Wii. You will be asked for the original retail disc in order to load the switch-aid. Accept that, and the Wii will load the switch-aid. You will need to navigate through the switch-aid and click on the top 1) switch on the right, the 2) switch you want to use, and 3) wad switch. Once you are in the wad switch mode, connect the black USB plug to the switch and the white USB plug to your Wii and install the switch-aid.
You will want to name your bin WADs with a unique title that represents your card. If you are attempting a story mode card, the title must be something like Story Mode. If you are attempting a Super Smash Brothers Ultimate, the title should be something like SSBU Story Mode. If you are wanting to make a box card, you will want to make your title something like Story Mode.
As long as you dont have ANY other WAD installed, you can rename and delete the existing one in your games folder, since there is no game data that would be affected by it. If you have more than one card, and you would like to keep your default bin, go into the welcome language, and be sure it says English.
For most people, the first thing they will have to do is that they will have to turn on a new Wii from off. Go into options, and find the setting for language. Then select it, and tick the box for english.
Now, you want to make an.ffz file that tells your system that it should import the bin. To do this, open up your bin using the start menu and go into nfctoolz(for android). It will probably be under programs or something similar. Then press the button that looks like it says bin. Once that file is finished, double click it, and it will tell the system to add it to the load order. Now, that will be fine if you only have one bin, but if you have more than one bin, make sure to add it as a backup first, then you may be able to use it.
Theres a process called repair that has been available in the emulator for a long time. This process allows you to repair the chip in the Wii itself, and it seems to do a lot more than that, but the website has been down for years and the last ESR-I-Neo project makes no mention of it, so lets not re-investigate it here.