Fix multitasking bug on iPhone 3G running iOS 4.2.1

By: Marawan Alwaraki, October 27, 2011
   Multitasking is a feature wanted by many iPhone users. Even though iPhone 3G users are not given multitasking by default from Apple, jailbreakers were able to give it to us. Click here for the post on how to enable/disable multitasking/wallpaper on your iPhone. The only problem with this is that on iOS 4.2.1 there is a glitch which puts you into safe mode when switching between the apps. Fortunately the cure has been discovered.
1.Open iFile and navigate to /system/library/coreservices/springboard.app/n82ap.plist
2.Choose 'Text Viewer'
3.find:
<key>opengles-1</key>
<true/>
All you need to do is change the 1 to a 2. Respring your iPhone and you're done! Warning: by changing the 1 to a 2 you may find lines randomly in your buttons such as 'edit', 'back', 'send', etc. 

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