You will find that there have been many recent online instructional articles on how to jailbreak your iOS 6 device. However these guides often skip how to install Cydia to your device – this is something you most probably jailbreaked your device for in the first place.
To help you out, we are going to provide you with the guide to add Cydia to your iOS 6 running device. Simply follow the steps below in the prescribed order and you would have Cydia installed on your device.
Initial step: (not necessary if you already have jailbroken your iOS 6 device) Jailbreak, and boot tethered your iOS 6 device. See this iOS 6 jailbreak tutorial for more info.
Step 1: If you have not already, jailbreak your iOS 6 device. Then boot tethered your iOS 6 device.
Step 2: Get on a local Wi-Fi network and SSH into your device. Mac users can employ any one of the various SSH tools available. Windows users could use something like Putty. Your SSH username will be “root” and password will be “alpine.”
Step 3: Through SSH, run the following command:
wget -q -O /tmp/cyinstall.sh wyndrepo.googlecode.com/files/cyinstall.sh && chmod 755 /tmp/cyinstall.sh && /tmp/cyinstall.sh
Step 4: After the command, your device will respring and Cydia will be appearing on your Home screen.
Step 5: Open up Cydia. The program will begin the Preparing Filesystem process.
Step 6: Enjoy Cydia installed on your iOS 6 device.