S5L8930

An SoC developed by Apple in-house chip design department. It is currently used in iPad, iPhone 4, and iPod Touch 4G. Publicly, Apple refers to this chip as the A4.

Exploits

iBoot

• Unreleased Untethered iBoot Exploit

Bootrom

• Unreleased exploit (demonstrated by Geohot)
• Unreleased exploit (pod2g)

(These are most likely the same exploit.)

Kernel

• BPF STX Kernel Write Exploit - Works up to iOS 3.2
• IOSurface Kernel Exploit - Works up to iOS 3.2.1

Userland

• MobileBackup Copy Exploit - Works up to iOS 3.2
• PDF CFF Font Stack Overflow - Works up to iOS 3.2.1

Boot Chain

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

Specifications

• CPU: ARM Cortex-A8
• GPU: PowerVR SGX 535
• A/V Playback: PowerVR VXD

These are the same specifications as the S5L8920 and S5L8922, except this processor has a higher clock speed.

See also

• S5L8930 (Bootrom)

Links

• http://www.apple.com/ipad/specs/
• http://www.brightsideofnews.com/news/2010/1/27/apple-a4-soc-unveiled---its-an-arm-cpu-and-the-gpu!.aspx