iPhone: How to restore 3G data after upgrading to iOS4

Sometimes, the process to upgrade iPhone to iOS4 corrupts the configuration for 3G data. You can see a 3G icon on the status bar, but all apps requiring Internet report that there is no connection. This problem don't affect WiFi connections. These are the steps I followed to restore the 3G data connection: 1. Download "iPhone Configuration Utility" from Apple site: 2. Run the "iPhone Configuration Utility" and select "Configuration Profiles" from the left sidebar. 3. Click "New" on the toolbar. 4. Fill the "General" section with a name, identifier and description of your choice for the profile. 5. Fill the "Advanced" section with the details of your phone carrier. For Telcel (Mexico) I provided these values: - APN: internet.itelcel.com - User: webgprs - Password: webgprs2002 - Proxy: 148.233.151.240 6. Connect your iPhone using USB and select it on the left sidebar. 7. Go to the "Configuration Profiles" and click 'Install' on your profile. And done, you must have now 3G data again. -- Desde Mi iPad usando BlogPress

iOS4

Download iOS4 for iPhone 3G using iTunes 9.2

Download redsn0w from the Dev-Team blog.

Use the restore option instead of the upgrade one. The latter causes 3G data issues on some jailbroken iPhones.

Run redsn0w just after the iPhone reboots and while iTunes waits for the sync options. This is the moment that worked the best for me, since waiting for the full sync has hung my iPhone in the apple logo.

Browse for the IPSW file for iOS4. The version released last june 21st is called "iPhone1,2_4.0_8A293_Restore.ipsw" and it's located in "~/Library/iTunes/iPhone Software Updates".

Enable the multitasking, wallpaper and battery options.

Plug the iPhone, turn it off and follow the onscreen directions.

The iPhone will restart already jailbroken and then you may continue with the sync.

Et voilà.

iMovie requires a front face camera, it won't work in 3G/S iPhones

- Posted using BlogPress from my iPhone