a) Load and Homebrew Channel and run DOP-Mii, on the IOS Selection Screen, select 'Install An iOS w/ fakesign' by pressing down on the d-pad then A on the wiimote. You should now be in the trucha bug restorer portion of DOP-Mii. Load IOS36 and select Downgrade IOS15. Each time it asks, select 'Download from NUS'
Make sure you get no errors. If Loading IOS36 doesn't work for this step, press B for no IOS reload when asked to load IOS. Although It should do these steps almost automatically, I'll just include the info.
b) In the fakesign installation, once iOS15 is downgraded, it should begin patching iOS36.. Make sure to install the patched IOS36 with all these patches selected (Just Say Yes to All of the ones that come up)
Install IOS to slot (36)
Hash Check (trucha) Yes
NAND Permissions Yes
Then Press A on Install Patched IOS36. Again, everytime it asks, choose 'Download from NUS'
c) On the same fakesign installation. Load IOS36 and select Restore IOS15. Each time it asks, select 'Download from NUS'
Once done, return to homebrew channel