Note: Upgrading to beta Android Wear based on Android Oreo 8 is done OTA (over-the-air) by simply requesting Android Wear beta access. Approval is instant for LG Watch Sport W280 users in the USA.
This procedure assumes a Linux computer plugged in via USB to the Android Wear smartwatch. It describes upgrade to Android Wear 2.0 based on Android OS 7.1.
on Linux computer
apt install android-tools-adb usermod -aG plugdev $(whoami)
- get the android.googleapis.com-hosted update .zip. Don’t download from random websites! Do not unzip this zip file (you can look inside, but we’ll be using the original .zip file
- on the Wear watch: Settings > About > tap Build version 7 times to enable Developer mode
- on the Wear watch: Settings > Developer Mode > enable ADB debugging
plug your watch into your computer via USB and type
sudo adb devices
you should see the reply
> <serial number> device
if it says something else, see the “troubleshooting” section at the bottom of this page.
adb reboot bootloader
the watch immediately goes to bootloader mode with tiny print
- tap the left and/or right arrows on the watch screen until “recovery mode” is in red, then tap the circle on the watch screen
- swipe DOWN (not left or right) until “apply update from ADB” then swipe right
on your computer
adb sideload ~/Downloads/<your watch file>.zip
- your watch will take several minutes to verify update package and patch system image unconditionally. Don’t worry if the watch says “log error”. You may need to reboot from the watch menu when it’s done.
- The watch reboot will take about 3-4 times longer than normal. Just be patient. It will finally say “android is upgrading apps”
For step #5
- if it says
offline: reboot your computer and unplug/plug your watch via USB to the PC
if it says
no permissionsbe sure you have used try typing
pkill adb sudo adb devices
- if it says
unauthorizedthen unlock your watch lock screen and take OK when asked if you want to give debugging permissions