Pass codes were set and i did not set them now it will not reset, pass codes were set and i did not set them now it will not reset

Question

my itouch has started asking for pass codes i did not set. i have used the same 4 digit pass code for many years. i was attempting to update to iso 7 when i went to reset the device i was prompted for the code. i tried my standard 4 dig. number. also my restriction setting is on also asking for a pass code. I have never used restriction setting EVER. i dont lock my device i dont sign out of mail. worry? no nothing to hide. it agrivates me that i learned that certain apps ive downloaded may be changing my settings and accessing information without my knowing. i dont mind the info leave my settings alone.

Answer 1

Place the iOS device in Recovery Mode and then connect to your computer and restore via iTunes. The iPod will be erased.
iOS: Wrong passcode results in red disabled screen                         
If recovery mode does not work try DFU mode.                        
How to put iPod touch / iPhone into DFU mode « Karthik's scribblings        
For how to restore:
iTunes: Restoring iOS software
To restore from backup see:
iOS: Back up and restore your iOS device with iCloud or iTunes
If you restore from iCloud backup the apps will be automatically downloaded. If you restore from iTunes backup the apps and music have to be in the iTunes library since synced media like apps and music are not included in the backup of the iOS device that iTunes makes.
You can redownload most iTunes purchases by:
Downloading past purchases from the App Store, iBookstore, and iTunes Store        
If problem what happens or does not happen and when in the instructions? When you successfully get the iPod in recovery mode and connect to computer iTunes should say it found an iPod in recovery mode.