Porting Siri on older devices is now much easier and also does not require any proxy server. JBN has a simple step-by-step guide to install Siri on iPhone 4, iPod touch 4G without need of any proxy server and iPhone 4S authentication keys.
For porting Siri A4 device, you just need an jailbroken iPhone 4 / iPod touch 4G and simple 7 steps to follow. You can also check the video tutorial.
How to Install Siri on iPhone 4, iPod touch 4G Using SiriPort
Step 1: Add the Source to Cydia by going to Manage> Sources> Add and add the repo repo.siriport.ru
Step 2: Install ”Siriport”
Step 3: Reboot
Step 4: Download and install the Certificate from the url siriport.ru/1.crt on to your device. [Note: If the site won’t load on your device, open it on your computer, download the certificate, email it to yourself, and open it on your device from your email].
Step 5: Now just Reboot your device
Step 6: Activate Siri and say “Hi Siri” Siri won’t work, wait 1-4 minutes and try again. (Say “Hi Siri” again)
Step 7: Repeat step 6 until Siri is activated
Now you must have Siri on your iPhone 4 / iPod touch 4G. After installing Siri you can also enhance your Siri with the best Siri cydia apps. You can also check the guides to install Siri using Spire on iPad 2 and iPhone 4, 3GS.
[UPDATE 1]: Now you can check if the servers status and the number people using the port at any time with this link: Server Status SiriPort. We tried and after 15 minutes we got a successful response on our iPhone 3GS and iPhone 4 both.
As the servers are quite loaded, it may take some time to load the website. Do let us know for any issues and queries. For more updates connect to us on @Jailbreakwire, join our Facebook Fanpage and join our Google+ network.