Interesting, since it worked for me. There should be two misspellings, did you correct them both?
If so, did you go to your settings menu to enable the feature? The option should appear in your settings after your fix the misspellings and reboot.
Edit: I am using 4.3.3 with jailbreakme.com 3.0 on a wifi iPad 2
Edit2: Also, I followed the instructions in this thread first, but it was already enabled in my plist file. My plist file also had a different number than the one described in the thread:
https://forums.macrumors.com/threads/1155374/