Hey everyone. I'm not sure if there's any other program out there for PC that will patch an IOS.wad to a higher version but I searched and couldn't find anything. This program will patch any IOS.wad to v54321 or v65535 (max) quickly and easily. I believe the only way to patch an IOS version up until now was to install it to your nand, patch the version, and then extract it from the nand to your computer. I hope someone here will find this tool useful. Enjoy!
To use simply run the exe in cmd prompt (instructions will populate)
Then type the location of the exe and the location of the IOS.wad you want to patch (I put both on the desktop for ease of use).
Now choose which version you would like to patch the IOS to (a = v54321 b = v65535) and press enter.
I.E. If you put IOSPatcher.exe and IOS.wad on your desktop like I did and want to patch to v54321 your value will look like this: C:\Users\Name\>desktop\IOSPatcher.exe desktop\IOS.wad a (see example below).