As you may know, OdysseusOTA2 only included iPhone 4S and 5 bundles. Now that 8.4.1 is about to receive a jailbreak, users of the other supported 32-bit devices are probably going to be interested in downgrading as well. For whoever it may interest, here are bundles for these devices: https://files.fm/u/fcbqqdnw (mirror: alitek’s bundle folder). Some are tested, some are not, but they are made using the same recipe.

Compatible devices: iPad2,1 iPad2,2 iPad2,3 iPad2,4 iPad2,5 iPad2,6 iPad2,7 iPad3,1 iPad3,2 iPad3,3 iPad3,4 iPad3,5 iPad3,6 iPod5,1

One can easily get to iOS 8.4.1 by using futurerestore, which now patches iBSS and iBEC on the fly, so why did I bother creating these bundles? I see two use cases:

  1. Dumping the onboard SHSH blobs for the currently installed iOS version.
  2. Restoring to custom firmware (examples: baseband preservation, slipstreaming jailbreaks / SSH, bundling activation records on A6/A6X). While futurerestore’s libipatcher only patches what is necessary in iBSS and iBEC to downgrade to stock firmware, bundles are more complete. They contain ASR patches (to allow downgrades to custom firmware), and their iBEC patches also knock out the kernel extensions AMFI (to prevent the modified ASR from being killed) and Sandbox.