I want to download 4.4 to my Win8 PC and sideload it to each of the tablets. They are currently running 4.3 JSS15R. I have been searching for the last 3 hours, and still haven't found a way to do it. I tried this page:
but when I get to step 8 I don't have an option for "update from SD card", only "apply update from adb", "wipe cashe partition" and "wipe data/factory reset", and "reboot system now". I have tried this link's method:
but when I do that it says "error: device not found".
I'm really desperate. I can't root them, and even if I did, it seems that would only allow me to stop the notification, not the background downloading of the data. Please help. I need these all ready to roll in about 12 hours. Sigh. . .