Step3- Port System Update 4.2k into any game
Extract System-Update_4.2K.zip to a folder containing your game iso.
Goto that folder, open WIIScrubber.exe
Click YES to "doesn't seem to be the correct key.bin. Do you want to use anyways?"
Click Load, select your game iso
All partitions will be marked as bad, this is ok.
Right click on Partition:0-UPDATE
Click- Resize partition, copy and paste the Maximum value into the Current value, click OK
Click- crypted partition- Load- Partition0.img
Exit the app and burn the iso to play- burn it proper