Ok. Must have not read this through or did something wrong. This really hosed my Note 2. I had my note 2 rooted but no custom recovery. It has the first update (that includes multi-view). I tried renaming SecLauncher2.apk and then copied over the SecLauncher2.4x5.apk and renamed it to SecLauncher2.apk. I didn't change permissions. I hit the home button and it waited a few seconds, then rebooted. Now its stuck at the Samsung logo. Suggestions? I had a note I before and the typical 3 finger and 2 finger combo on boot aren't working. I'm really hosed here.
update: Fixed it. That was scary. Won't mess with this mod again, at least not for a while. Learned a few things in the process though: The key combos are different than the note 1. You can get to adb shell if you're booted into the stock recovery. Once in there, I could restore the files they way they were before (i.e. mv SecLauncher2save.apk SecLauncher2.apk after renaming that SecLauncher2.apk). After coming up the first time, the launcher was set back to defaults, so I'll have to set up my launcher again, but it's a small price to pay.