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Difference between revisions of "S5L8920"
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This is the processor used in the [[iPhone 3GS]]. |
This is the processor used in the [[iPhone 3GS]]. |
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| − | S5L8920 using [http://www.arm.com/products/CPUs/archi-thumb2.html THUMB-2] instruction set as well as ARM and THUMB ones. Binaries included in iOS are compiled for only [[Armv7]] are not compatible with older CPUs. |
+ | S5L8920 using [http://www.arm.com/products/CPUs/archi-thumb2.html THUMB-2] instruction set as well as ARM and THUMB ones. Binaries included in iOS are compiled for only [[Armv7]] and are not compatible with older CPUs. |
== Exploits == |
== Exploits == |
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Revision as of 05:53, 6 August 2010
This is the processor used in the iPhone 3GS.
S5L8920 using THUMB-2 instruction set as well as ARM and THUMB ones. Binaries included in iOS are compiled for only Armv7 and are not compatible with older CPUs.
Contents
Exploits
iBoot / Kernel
- iBoot Environment Variable Overflow - Firmware 3.1b3 and below (Note: iBoot on the S5L8920 can be downgraded allowing the exploit to be used on future firmwares, but only if a backup of the device-specific Apple-signed 3.0 iBSS with unique ECID was made.)
- usb_control_msg(0x21, 2) Exploit - 3.1.2 and below.
Bootrom
Userland
- MobileBackup Copy Exploit - Firmware 3.1.3 and below
- BPF STX Kernel Write Exploit - Firmware 3.1.3 and below
Boot Chain
Bootrom->LLB->iBoot->Kernel->System Software
