Yes you read it right, great news from JBN for you. finally you can install Siri on jailbroken iPhone 4, iPod touch 4G without Proxy Server!!
repo.siriport.ruStep 2: Tab on Search, then search for “Siriport” and install it and reboot your device.
Step 3: Reboot your device. Step 4: Download this Certificate file From siriport.ru/1.crt or here Direct like. Note: If you can not download this Certificate on your device, download it from your computer, then email it to yourself, and open it on your iPhone 4, iPod touch 4G from your email.
Step 7: Activate Siri and say “Hi Siri”.
Step 8: It may stuck with you at the first time, wait 1-4 minutes and try again. (Say “Hi Siri” again) until Siri is activated.