If you use an old image on the Pi2 it wont boot, you would need to run
sudo apt-get update
sudo apt-get upgrade

Here is 2.4.2 if you want to test that:
https://mega.co.nz/#!zQAnzLyS!Yl6-9-6E6JnHI-s4Vy4lF2e7GAgZFLCMH6qzY1XOIc0