The following guide will help you enable “Voice Control” feature which is found in iPhone 3GS and the 3rd-gen iPod touch 3G. Make sure you have jailbroken your iPad prior to following this guide. Step by step guide on how to jailbreak your iPad using Spirit can be found here.
Step 1: Make sure you have OpenSSH installed on your iPad:
Open Cydia. Touch on “Search” tab and then search for “OpenSSH”.
Install “OpenSSH” and reboot your iPad.
Step 2: Connect your iPad with your computer. Make sure iTunes is not running.
Step 3: Download and install Cyberduck for Mac or WinSCP for Windows. Enter the following details to login to your iPad:
Server: The IP address of your iPad. Settings –> WiFi –> <Your Network Name>
Protocol: SFTP (SSH File Transfer Protocol)
Hostname: The IP address of your iPad. Setting –> WiFi –> <Your Network Name>
User name: root
Step 4: Navigate to /System/Library/CoreServices/SpringBoard.app/ directory.
Step 5: Edit the K48AP.plistfile in TextEdit or TextWrangler and add the following lines as shown in the screenshot below.
Step 6: Save this file and disconnect your iPad.
Step 7: Now simply restart your iPad. Voila ! You can now use ‘Voice Control’ feature by simply holding the "Home” button on your iPad until you see “Voice Control” screen on your iPad.
Disclaimer: This guide is for testing & educational purposes only. Follow it on your own risk. I’m not responsible for any loss of important data or malfunctioning of your iPad.