These codes have already been 'de-converted' from their F6 form to their 'regular' region dependent form
http://mkwii.com/showthread.php?tid=185
http://mkwii.com/showthread.php?tid=184
I have a De-convert F6 tut in the guides sub-forum, but it's in a real need of an update as I wrote it a long time ago. Any F6 codes you see in the Gecko site have all been de-converted and posted+tested on the forums.
One of the final updates to the Gecko 1.9.3.1 code handler was the implementation of F6 codes. Unfortunately, there were bugs but an update to fix them never came as this was during the time when the Wii development scene died quickly.
http://mkwii.com/showthread.php?tid=185
http://mkwii.com/showthread.php?tid=184
I have a De-convert F6 tut in the guides sub-forum, but it's in a real need of an update as I wrote it a long time ago. Any F6 codes you see in the Gecko site have all been de-converted and posted+tested on the forums.
One of the final updates to the Gecko 1.9.3.1 code handler was the implementation of F6 codes. Unfortunately, there were bugs but an update to fix them never came as this was during the time when the Wii development scene died quickly.