I'm interested in how the RAM can be exploited in iPhone 5+, iOS 8+.
I've previously discussed general iPhone encryption and from the response it reads:
There are many exploits over the years that can give kernel-level code execution on an iOS device, but almost all of them require either unlocked physical access to the device or rebooting, which would clear the AfterFirstUnlock key from memory. The key is not encrypted in RAM, so opening the phone and accessing the RAM chip directly might work, except for the fact that the iPhone uses a package-on-package construction, and the RAM chip would have to be separated physically from the processor first--without destroying the data, so the chip would need power and/or to be frozen the whole time.
The physical security of iPhone RAM seems good, but how about software level exploits of RAM on (a locked) iPhone? What can be found, or why is it unrealistic? Is iPhone RAM well protected?
EDIT: to be specific, the scenario is re-locked iPhone (unlocked once since power up)