HELP: Jailbreak Apps no longer working?

My jailbroken iPhone 4 was running just fine until I was reading another thread that said you can downgrade mobile substrate to 3226 to save battery. I added the repo posted and intalled the mobile substrate 3226. It gave me some error during installation saying it was unable to overwrite something, froze for a few seconds, then tried to respring but went into a soft reset on its own. Now iLock doesnt show up, bitesms quick reply doesnt pop up, sbrotator isnt working, etc. There are no settings for these in my settings app like there used to be. Help?