Another thing about the 3in1, just use Rudolph's homberew app. You may as well use his new version, Rudolph's ExpLoader app. To active RAM or Rumble(don't recall if I actually tested this or not), just go to the 3rd page of Rudolph's app and you'll have a selection of Low/Med/High Rumble or RAM Expansion Pack. Just pick one, the app will soft-reset the DS, then just run the Opera browser ROM(no patching needed, I've tested this) or some rumble enabled ROM/app and it should just work with no patching necessary.
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Sandisk 8GB SDHC, Castlevania was just one of the problematic ROMs, and I don't recall offhand what the other one was. But, like I mentioned before most other things should work fine and the problem ROMs MAY even run fine from the Sandisk as I've seen some unverified reports that they DO work with the Sandisk. Might be nice to test them, and make a post somewhere and/or maybe start a uSD SDHC testing thread in the parent forum here...
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