Apple Watch Series 3



The Apple Watch Series 3 was first introduced at Apple's "Let's meet at our place" keynote on 2017.

Internally, the Apple Watch Series 3 is referred to as N111sAP (Watch3,1 - 38mm Cellular), N111bAP (Watch3,2 - 42mm Cellular), N121sAP (Watch3,3 - 38mm), and N121bAP (Watch3,4 - 42mm).

Application Processor
The Apple Watch Series 3 makes use of the T8004 (S3) Processor. It also contains a GPS module, and on cellular models an LTE chip.

Exploitation
The bootrom found in the T8004 CPU inside the S3 watch is vulnerable to checkm8. By connecting it to a computer running macOS or Linux using an iBUS adapter, the watch can be kicked into "pwned DFU mode" via ipwndfu.

A public jailbreak using this vulnerability on watchOS has not yet been developed, and no tools outside of ipwndfu itself support Apple Watch firmware, yet.

Specifications

 * Display: Retina OLED
 * Screen: Ion-X glass or sapphire crystal
 * Compatibility (GPS): iOS 11 or later running on an iPhone 5s or newer
 * Compatibility (GPS+LTE): iOS 11 or later running on an iPhone 6 or newer

Links

 * https://www.apple.com/apple-watch-series-3