There is a file that you can edit to change the Restrictions Passcode to anything you want.
First read the instructions at the following URL to help you understand the issues and reset process.
Download and install the following utility: iBotBackup
Do a complete backup using iTunes. Do not encrypt the backup.
Then in iBotBackup, open the file "com.apple.springboard.plist" under
\SystemFiles\HomeDomain\Library\Preferences. You can edit it in the XML editor, or copy and paste the text into TextEdit on the Mac and make the following changes.
1) Find all keys that begin with the string "SPParentalControl". I grouped them together to make it easier to find them next time.
2) Replace the following keys to have the following text values.
Before letting iBotBackup reboot the iPad, I also deleted the following key entirely, just for good measure, since it appeared to contain the lockout time interval:
- Select Restore options
You will now be asked to select from the following 3 restore options:
a) Reboot device after restore
b) Don’t Copy backup
c) Remove items from device that will not be restored
From these 3 options make sure that you select the first 2 options and uncheck the third option.
Then use iBotBackup to Restore this file back to your iPad / IOS device.
Your iPad will reboot. Go to Restrictions again, and enter your new PIN of 1234. You may need to enter the new pin more than once.
This worked for me !! It also taught me a few more things about Apple IOS configuration.
The following URL was also somewhat helpful in understanding what keys to change: https://discussions.apple.com/thread/2667637?start=105&tstart=0