signCheck is a homebrew application which does several check on your wii IOS, can check if fakesigning (aka trucha bug) can be used, if nand, usb 2 ios tree or boot2 ios tree is accessible by that ios. At the end of the test it will output a .csv log named signCheck.csv in your sd card root.
Changelog
0.1 - First public release.
0.2 - Added check of ios16, 60 and 61 as they are included in newer updates.
0.3 - Completely rewritten, now check all the ios in the wii and adds a pair of new checks