One of the new 'features' in iOS 4 is the addition of over-the-air carrier updates. Only the APN settings are being signed other settings can still be modified without needing to patch commcenter. This signature-check can be circumvented by patching commcenter. This is also a concern for users of carriers that do not officially offer MMS or Tethering services for users at all. This has been implemented to stop users bypassing the carrier's designated APN for tethering that may require payment for access. Note: this command just enables the preference and exits, so iTunes won't open if it's not already running.Īs of iOS 3.1b1, APN settings are now being signed to prevent tampering/modification by users.
"%ProgramFiles%\iTunes\iTunes.exe" /setPrefInt carrier-testing 1 Open Terminal and paste the following command:ĭefaults write carrier-testing -bool trueĮnter the following in a command line, the Start menu search box or the Run dialog: ipcc files can be loaded from the user's hard drive by clicking either "Check for Updates" or "Restore" button while holding Shift (on Windows) or Option key (on Mac).Ģ.
However, when the "carrier-testing" preference is enabled. \12345 - symlink to M圜arrier_au.bundle (12345 is MCC+MNC)īy default, iTunes allows only carrier bundle updates from Apple. \ist - bundle version (not always present) \FSO_CARRIER_M圜arrier.png - logo for black statusbar \Default_CARRIER_M圜arrier.png - logo for grey status bar They are named after the carrier and the country they are for (for example, M圜arrier_au.ipcc) They contain the mandatory Payload folder that includes the bundle itself and the symlink: ~/Library/iTunes/iPhone Carrier Support/ - this folder will not exist if iTunes hasn't downloaded any carrier updatesĬarrier bundles are ZIP archives with.On a computer that has downloaded carrier bundle updates, they are stored in the following directories:
This allows Apple to update carrier bundles without releasing a whole new OS. If two bundles with the same name exist in both paths, the one on user partition takes preference. Starting with iOS 4.2, carrier bundles are stored in a subfolder of this path.
On the device side, carrier bundles are stored in the following directories: These include voice mail numbers, MMS and APN settings etc.įor users on carriers other than the Apple's official partners, carrier bundles allow to configure important settings such as APN and enable features like MMS and tethering. Carrier Bundles provide a way to organize all customizations related to carriers in one place.
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