[Ray76]

And the twaddle is what, specifically?

[palmer]

The FBI asked for the SW. They did not demand it but said Apple “may” supply it as long as they tie the SW to the phone. They gave two examples of how to tie it to the phone. First the serial number which is on the back of the phone. But the serial number is not accessible in SW as of iOS 8. Apple provides an alternative ID on the screen. The IMEI is on the SIM and the SIM is removable so it obviously cannot be used to ID a phone.

[palmer]

Another problem is the order requires that the software run in RAM and not modify any flash memory. But the AES key unlocking (using the passcode and phone specific info is done in the flash. See #11: "The entire hierarchy of encryption keys, class keys, and keybags, is entangled with a device-specific UID that cannot be extracted from the device nor accessed by on-device software." So what they want can't be done in RAM, see http://www.darthnull.org/2014/10/06/ios-encryption