This article discusses software internally used by Apple.
Acquiring a copy without Apple's consent is illegal and may result in being scammed.
This firmware is an internal NonUI build of iOS 11.0. It appears to be a later verison of TigrisAni 15A93261h There are several new applications from the earlier build that has pictures for. This build is known to be able to run on iPhone 8, iPad mini 2, iPhone 5s and untested, devices with SoCs S5L8960X, S8000, S8001, T7000, T7001, T8010, T8011, and T8015.
Upon booting into SwitchBoard.app, the following apps are visible: