Yeah I know, you want to redirect the update in SM to your own server. Quite simple to do. But for the Wii to accept it as a valid update server, it will
have to be a near perfect clone of Nintendo's servers, with your own content on it. I still see zero point in what you want to do, but you just need to patch System Menu, Priiloader can do the job fairly easily.
Here's a patch to do what you want:
Code:
[Custom update server]
maxversion=518
minversion=1
amount=1
hash=0x68747470,0x733a2f2f,0x25732f6e,0x75732f73
patch=0x68747470, 0x733A2F2F, 0x6578616D, 0x706C652E, 0x636F6D2F, 0x4E555346, 0x414B452F, 0x73757064, 0x61746572
(hash_hacks.ini format obviously)
That'll redirect the update to:
https://example.com/NUSFAKE/supdater
That is as long as the URL can be (in normal usage, the actual domain is substituted in at runtime, and the URL is longer, but because you want a different domain, you need to put the domain in too). If you want to use a shorter one, pad the patch with 0x00s.
Hope that is "helpful" enough for you