After doing some digging and paying zero attention in class today, I came across the kernel source files for the Exynos 7270 and the combination firmwares for the Gear 3 Classic and Frontier versions.
If you don't know what combination files are here is a great explanation but the TL;DR is that this is the internal firmware Samsung uses to reset devices, so it gives you full read/write access to the device including root access. So basically this is a pre-rooted firmware, and I assume that it is bootloader unlocked as it appears to flash an engineer sboot (bootloader), so I believe this would be the first step towards porting Android Wear/TWRP!
The kernel source is what we will actually use to port over AW/TWRP. It does not seem to have been posted before, and took me a few hours of digging to find. My watch comes in tomorrow, and after I flash this firmware I will pull the boot.img and start making a device/vendor tree to attempt and make a kernel!
Here is the kernel source for the Exynos 7270: https://github.com/HonestlyAnnoying/...nel_exynos7270
Here is the kernel source for the Gear S3 (all versions) (will upload to GitHub in the morning): Samsung Opensource
Here is the SM-R770 (Classic) combination firmware [R770XXU2BQC2]: link
Here is the SM-R760 (Frontier) combination firmware [R760XXU2BQC2]: link
The road to porting Android Wear is going to take a lot of work, and any help developing (not testing for now!) would be EXTREMELY appreciated (looking at you guys @cipherswitch @biktor_gj !). If you would like to help with development or would like to contribute in any way, please PM me or hit me up on Skype (honestly.annoying)!
Here is a Google Drive folder with all files I have for this, it will be updated as new things are found