Don't mess with the disc swap trick. All chips work fine (including wiikey) without swaping. Swaping is something that some people optionally decide to do since they couldn't run brick-blocker on the DVD9 ISO.
There are two options to avoid having to swap. Option A leaves you with duplicated channels but the only thing you need is a single DVD9 release disc. Option B doens't leave you with duplicate channels but you do need two discs (either two release DVD9 discs or one release DVD9 disc and one DVD5 disc).
**Remember not to run the update AT ALL (total or partially) if your wii is not previously upgraded to begin with at 3.1. or you risk serious problems**** If your Wii's firmware is already at 3.1, just about everyone has reported success with either options and there seems to be no risk of "bricking". As always, use at your own risk, tough.
OPTION A (DUPLICATED CHANNELS, NO SWAP)
-Burn your DVD9 to a dual layer DVD+ DL (or DVD-R DL) disc.
-You may need to run regionfrii on your ISO before you burn it unless your chip has automatic mutiregion enabled. In this case, running regionfrii is optional. It never "hurts" to run it, so if you are in doubt, feel free to run it regardless or whether you need it or not.
-Now put the disc in and it will prompt you to run the update. Let it finish to 100%.
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Your are done. No more problems or swaps. It leaves you duplicated channels, though. Just play your DVD9 disc normally from now on. No swap, no update, no nothing.
OPTION B (NO DUPLICATED CHANNELS, NO SWAP)
-Burn your DVD9 to a dual layer DVD+ DL (or DVD-R DL) disc or, alternatively, if you also have the DVD5 version, you can instead burn that to a single layer disc. This disc will only be used once, so if you don't want to waste a Dual Layer disc and already have downloaded the DVD5 version, you can use that. Either one. Doesn't matter.
-You may need to run regionfrii on your ISO before you burn it unless your chip has automatic mutiregion enabled. In this case, running regionfrii is optional.
-Now put the disc in and it will prompt you to run the update. Let it run only till about 15% is done and unplug your wii.
-You are done with this disc. You no longer need to run it again.
-Now burn another disc with the DVD9 release but brick-block it first by using wii-update-remover 1.0 or the NEW version of brick-blocker just out. Again, you may need to also run regionfrii on the iso before you burn it if you don't have automatic multiregion support enabled from your chip.
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That's it. Just play this disc normally from now on. No swaping, no update, no duplicated channels, no nothing. Just play.
You can find wii-update-remover here
Wii update remover 1.0.exe
It's a command line (DOS-type) application, so it doesn't have a graphical user interface. Just drag-and-drop your dvd9.iso file on it and it will be "brick-blocked". Please note that it will patch the original ISO file and there is no "undo option" so if you want to preserve your "non-brick-blocked" original ISO copy don't run it through the wii-update-remover. Use a copy of you iso file instead. Also, make sure you only run your iso once through the wii-update-remover, as the ISO may not work if you run it twice through the wii-update-remover.
Untested also is the new version of brick-blocker with DVD9 support. You can get it from here:
http://wbb.rockman18.com/