by Prasanna Vignesh
4. June 2009 05:43
To install or update your iPhone OS to 3.0 beta, you have to know some key points before you do the update or installation.
- Devices updated to iPhone 3.0 beta can not be restored to earlier versions of iPhone OS . Devices will be able to upgrade to future beta releases and the final iPhone OS 3.0 software.
- Only users who registered for the developer program can able to access the resources of iPhone SDK 3.0 and the Device OS 3.0 beta.
Follow the instrucions to install or update the iPhone device OS to 3.0 beta.
- Login to your developer program portal of apple iPhone.
- Under iPhone SDK 3.0 you can download all the required resources to update your device OS to 3.0 beta and the Developer SDK 3.0 beta.
- First You must download and install iTunes 8.2 in order to activate iPhone OS 3.0 beta 5 on your iPhone or iPod touch.
- Next download the OS beta according to your device type
iPhone 3G
iPhone
iPod touch (2nd generation)
iPod touch (1st generation)
- Connect your device to iTune.
- Before install/update the OS make sure to Sync your device.
- After complete the sync process do the next step.

- Open the .dmg file you have a .ipws file.
- In iTunes you have a restore button.
- Press Alt and click on "Restore" button.
- It will open a file dialog, map the .ipws file.
- That's it... Apple do all the wonders..
- It will update your device OS to 3.0 beta and then allows you to install all the backups like, contacts, applications, music library and Pictures etc...
Now your device is ready to start development for iPhone OS 3.0 with iPhone SDK 3.0 beta :)