I have a Nexus 7 2012 device and I am attempting to upgrade to lollipop. I can get the right image from:
However, when I try to upgrade from 4.4.2, I run the command:
adb sideload lollipop.zip
The file gets uploaded, but the device then says:
Verifing the update package:
E: Footer is wrong
E. Signature Verification Failed
I tried both images for the 2012 Wifi and Mobile versions, same result. I also tried to do a factory reset.
Are the images wrong, or am I just doing something wrong?