Attempt to retrieve the APK handset and Cortex Onboard apps. So we can examine them for clues as to how the android device talks to the Hub.

• Open up the Cortex Onboard APK, easy, it’s on the play store.
• WiFi ADB to the Handset.
• The Handset firmware is updated by the Cortex Onboard App, so it’s probably inside!
• Break open the Handset and find a USB header, ADB
• JTAG/MMC direct read. HARD!

lol it’s named com.blades.needle?

Hows about we get it from a shady website?

https://play.google.com/store/apps/details?id=com.blades.needle&hl=en-US

Garmin is constantly working to improve Cortex and strives to make your boating a safer and more enjoyable experience. This version has several improvements to the Cortex Onboard app experience and includes Cortex Software update 2.2.2 (containing Hub version 2.2.2914 and Handset version 2.2.1). Detailed release notes can be found on garmin.com.

Download several APK files, mostly xapk files which are probably tainted with some extra stuff APKPure added. One of the files was an plain looking .apk but was the previous version, 2.0.14.1. I have stored them away in a cloud drive for now until we find a better workspace.