Difference between revisions of "S5L8920"

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(iBoot / Kernel: adding in the info removed from S5L8720 page that was related to s5l8920)
m (iBoot / Kernel: S5L8920 information is about the S5L8920.)
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== Exploits ==
 
== Exploits ==
 
=== [[iBoot]] / [[Kernel]] ===
 
=== [[iBoot]] / [[Kernel]] ===
* [[iBoot Environment Variable Overflow]] - Firmware 3.1b1 and below (Note: [[iBoot]] on the S5l8720 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.)
+
* [[iBoot Environment Variable Overflow]] - Firmware 3.1b1 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.)
   
 
=== [[S5L8920 (Bootrom)|Bootrom]] ===
 
=== [[S5L8920 (Bootrom)|Bootrom]] ===

Revision as of 15:12, 17 July 2009

This is the processor used in the iPhone 3GS.

S5L8920 using THUMB-2 instruction set as much as ARM and THUMB ones. So the compiled binaries are not compatible with older CPUs.

Exploits

iBoot / Kernel

  • iBoot Environment Variable Overflow - Firmware 3.1b1 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.)

Bootrom

Boot Chain

Bootrom->LLB->iBoot->Kernel->System Software

See also