A few days back, iOS 4.2.1 GM was released to developers and it was able to jailbreak the new iOS 4.2.1 using redsn0w. Also, last day, redsn0w 0.9.6 beta 3 was released to support the jailbreak of iOS 4.2.1 GM. But Cydia was yet to be patched. So here is a guide on how to patch and install Cydia on iOS 4.2.1.
1. Jailbreak your device on iOS 4.2.1.
2. Download the Cydia patch given here.
3. SSH into your device.
4. Now copy the patch file to /Applications/Cydia.app/Cydia_.
5. Now type the below given commands in the terminal app on Mac OS X by using the original Cydia binary from here.
apt-get update
mv Cydia_ Cydia.bak
bspatch Cydia.bak Cydia_ Cydia.patch
chmod +x+s /Applications/Cydia.app/Cydia_
6. Reboot your device and Cydia will be working.
3 Comments
how do you ssh into your device if you can’t download it from cydia, because you want to instal cydia?
Thank you… Need Cydia to install OpenSSH… so you can SSH to the device… to install Cydia… because Cydia isn’t working… I’m assuming the OP didn’t actually do this but stated the obvious without taking into account that cydia is broken…
What wasn’t said here… because this guide was so well written… was you need to jailbreak with Redsn0w 0.9.6 beta 3 and install the SSHbundle.tgz during the process. That will give you SSH access…