tvOS

tvOS

Developer	Apple Inc.
Written in	ARM assembly C C++ Objective-C Swift
OS family	iOS-based (Unix-like)
Working state	Current
Source model	Closed source
Initial release	29 October 2015
Update method	iTunes OTA Updates
Package manager	App Store
Platforms	Apple TV HD and later
Kernel type	Hybrid (XNU)
Default user interface	PineBoard
License	Proprietary
Official website	www.apple.com/tvos

tvOS is the operating system that is used on the Apple TV, as of the Apple TV HD and newer. It's a forked version of iOS. The first version released was stylized and marketed as tvOS 9.0, which was based on iOS 9.1.

Research

Since the first public version of tvOS, Apple provides a complete filesystem image in the form of an OTA update. This allows people to reconstruct the entire system partition along with all binaries, in order to perform static analysis on them.

Additionally, Apple has not actually fixed any bugs from Pangu's iOS 9.0.x jailbreak in iOS 9.1 aside from the kernel exploit (CVE-2015-6974). Because of this, Pangu9 could be modified (notably, exploiting a different kernel vulnerability) to jailbreak tvOS 9.0.

An overview analysis of tvOS OTA updates can be found in http://newosxbook.com/articles/OTA3.html.

The Yalu Jailbreak has been ported to support tvOS versions 10.0-10.1. q.v. http://newosxbook.com/forum/viewtopic.php?f=11&t=16820&p=18268#p18268