iPhone OS 4 Beta Firmware

Apple released the developers beta of iPhone OS 4 at yesterday's Apple Keynote. The iPhone OS 4 is compatible with iPhone 3G, iPhone 3GS, and with the second and third generation iPod this summer, and the iPad in the early fourth quarter of this year.

The iPhone OS 4 has over 100 new features that include seven multitasking services (i.e. background audio, fast app switching), folder organization with drag-and-drop, a unified inbox that displays the contents from all email accounts, and an e-book reader.

If you have an Apple's developer account, you can proceed over to the Apple website to download the iPhone OS 4 Beta software.

If you don't have a developer account, but you're interested in testing out the iPhone OS 4 Beta, here are the firmwares. You will still need to register your UDID to use the new iPhone OS 4 (can't help you there).

» iPod.Touch.3G.OS.4.0.BETA  353.4 MB

» iPod.Touch.2G.OS.4.0.BETA  306 MB

» iPhone.3G.OS.4.0.BETA 280.4 MB

» iPhone.3GS.OS.4.0.BETA 363.10 MB

To upgrade using iTunes: When your iPod shows up in iTunes, click on your iPod's name. Press and hold SHIFT then click update and find the OS 3 file. For the iPhone it should be “iPhonex_x_4.0_8A230M_Restore.ipsw”. For the iPod Touch 2G, “iPodx_x_4.0_8A230M_Restore.ipsw”. Choose Open and now iTunes and your iPod/iPhone should be doing the work for you.