This article discusses software internally used by Apple.
Acquiring a copy without Apple's consent is illegal and may result in being scammed.
This Build is likely based on an internal build of iOS 5.0. It is likely an earlier version of HoodooYabuli 9B3145a This build has been seen on many iPhone 4S DVT Prototypes.
This firmware has the kernel version
Darwin Kernel Version 11.0.0: Thu Jul 7 23:17:34 PDT 2011; root:xnu-1878.4.15~2/DEVELOPMENT_ARM_S5L8940X.
When you boot into SwitchBoard.app this build should have the following apps.