Sierra 7C108b

This article discusses software internally used by Apple. Acquiring a copy without Apple's consent is illegal and may result in being scammed. Engaging in illegal activity is not condoned. This information is provided for educational purposes only.

A 3.1.X based firmware used for testing iPhone devices. Found on an iPhone 3GS.

Toolkit

After booting up, SwitchBoard.app screen shows up allowing you to choose different options.

They consist of:

• AT Command
• BurnIn
• LcdUTest
• Operator
• Soundwave

Soundwave crashes SwitchBoard.

Binaries

The firmware includes standard set of UNIX binaries. apt-get is present suggesting that there is an internal APT repository.