Difference between revisions of "Trampoline"

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== iOSUpdater.app Notes ==
 
== iOSUpdater.app Notes ==
* Placing it in [[iTunes]] and adding it to the device will allow the update.
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* The app can be installed on a device via [[iTunes]].
* Updater ''can't'' be deleted on device, but ''can'' with [[iTunes]].
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* iOS Updater can't be deleted on the device, but can be removed via [[iTunes]].
* Requires elevated ([[/private/var/root|root]]) privileges (as far as I can tell)
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* The app appears to require elevated ([[/private/var/root|root]]) privileges.
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* iOS Updater is deleted on successful update.
* Update doesn't work if app is installed with [[iTunes]] and removed after (with iTunes).
 
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* Among with iOSUpdaterHelper.dmg, in iOSUpdater.app, there is its signature. This prevents hackers from replacing it with an unofficial image.
* Update does work if app is installed with [[iTunes]] and started via the app.
 
* Deleted on successful update to ''6.0.1'' (10A525) or ''6.0.2'' (10A?)
 
   
   

Latest revision as of 06:02, 19 March 2016

Trampoline is the codename for the iPhone 5's OTA Update Enabler. iOS 6.0 on the iPhone 5 apparently included a bug that prevented OTA updates from occurring properly. As a result, Apple made the OTA update process a little less straightforward.

Trying to perform an OTA update informs you about the updater app, and how to obtain it.

Process

  • Spawn by update daemon (causes elevated privileges)
  • Mount Disk Image /Applications/iOSUpdater.app/iOSUpdaterHelper.dmg at /Developer
  • Copy contents off (essentially cp -r /Developer/* /)
  • Reboot
  • Daemon runs and patches files
  • Daemon deletes Trampoline
  • Reboot

iOSUpdater.app Notes

  • The app can be installed on a device via iTunes.
  • iOS Updater can't be deleted on the device, but can be removed via iTunes.
  • The app appears to require elevated (root) privileges.
  • iOS Updater is deleted on successful update.
  • Among with iOSUpdaterHelper.dmg, in iOSUpdater.app, there is its signature. This prevents hackers from replacing it with an unofficial image.


External links

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