I'm trying to adb-sideload a new recovery (Philz Touch Recovery n5110) I get,
This package is for a 'konowifi.5110.GT-N5110.konawifixx' devices: this is a 'espresso10wifi'. E: Error in /tmp/update.zip (Status 7) Installation aborted.
The Samsung N5110 is the Galaxy Note 8. The "espresso10wifi" is a Galaxy Tab 2 10.1 (your device).
It's not flashing because you're flashing the wrong file for your device.