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Jailbreak (S5L8900)	Break Chain of Trust (S5L8720)	Unlock 02.30.03 or break the chain of trust of the X-Gold
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Software

• Filesystem
• Device Nodes
• System Log
• Linux on iPhone

Hardware

• iPhone (m68ap)
• iPhone 3G (n82ap)
• iPod touch (n45ap)
• iPod touch 2nd Generation (n72ap)

App Processor (Jailbreak)

The iPhone, iPod touch, and iPhone 3G makes use of the S5L8900 platform as application processor, while the iPod touch 2G uses the S5L8720. Here is where the jailbreak applies.

Baseband (Unlock)

The Baseband Device is where the unlock applies.

File formats

• 8900 File Format
• IMG2 File Format
• IMG3 File Format
• secpack
• secpack 2.0
• seczone

Protocols

• Recovery Mode
• DFU 0x1222
• WTF 0x1227
• Normal Mode
• Restore Mode
• Baseband Bootrom Protocol
• Baseband Bootloader Protocol

Keys

• AES Keys
• Apple Certificate
• Baseband RSA Keys
• Baseband TEA Keys
• IMG3 Keys / IVs
• NCK
• Root Filesystem DMG Keys

Application Development

• Toolchain (Includes tutorials)
• Toolchain 2.0 (Includes tutorials)
• Frameworks
• MobileDevice Library
• Apple Certification Process
• Bypassing iPhone Code Signatures
• Distribution Methods

Tutorials

See here.

Useful Links

See here.

Definitions

• Jailbreak
• Activation
• Unlock
• Baseband
• Bootloader
• DFU
• iBoot
• iBEC
• iBSS
• NORID
• CHIPID

Other Useful Hacks

• Bluetooth