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Sierra 7C108b
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
- Opertor
- 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.