Last time we told you about that if you wanted Siri on your iPhone 4/iPod you would need a proxy Siri port on another iPhone 4S. But the times have changed, now you can install Siri on your Jailbroken iPhone/ iPod touch.
Go to Cydia > Sources > Edit and add the following repo. “http://repo.siriport.ru”
After the Repo is installed search and install “Siriport”
Go to the website “siriport.ru/1.crt” download and Install the Certificate from the website. If it doesn’t work straight from the safari Browser on your iOS device then go to the same website on your computer, Download the certificate on your computer and email it to your self. Then open the same email on the Mail App and click on the attachment and then install the certificate.
To Activate Siri and say “Hi Siri” Siri won’t work for the first time so wait 1-4 minutes and try again. (Say “Hi Siri” again)
Repeat step 6 until Siri is activated as it may take some time getting connected to the server.