A little while back, Apple released iOS 5 beta 4 for supported iOS devices. As always, iPhoneism brings you free iOS 5 beta 4 IPSW download links for iPhone, iPad and iPod touch. Using this links, download the latest iOS 5 beta 4 for your iOS device.
iOS beta firmware is only released for developers that are enrolled in the iPhone Developer Program which alone costs $99 per year. So what about those aspiring beta testers who don't have a developers account but want to try out iOS beta firmware? For them, we provide download links to iOS 5 beta ipsws and iTunes 10.5 pre-release betas!
Please remember that you will need to get your UDID registered before you proceed with installing iOS 5 beta 4 on your iPhone, iPad and iPod touch. First find out the UDID of your iOS device, then get it registered after that, you can download iOS 5 beta 4. To upgrade to that, you also need to download iTunes 10.5 beta 4.
Alternate way: There's also a workaround to this as well. While we shall be adding iOS 5 beta 4 ipsw download links here shortly, what you can do is that you can download iOS 5 beta 3 and iTunes 10.5 beta 3 using these links. As iOS 5 beta 4 is an OTA update, simply upgrade your device to iOS 5 beta 3 and once upgraded, follow our tutorial on how to install iOS 5 beta 4 OTA on your iOS device. That way, you won't need to download iOS 5 beta 4 ipsw!
Please do upgrade to iOS 5 beta firmware at your own risk. Those who are using software unlocked iPhones, should stay far away from stock firmware for now as no unlock is available at the moment.
Download iOS 5 beta 4 IPSW:
Update: Links removed due to copyright issues.