NOTE: HD model packs are not compatible with POD Farm 2.5. Only standard model packs can be used with a Line 6 device and/or a computer authorized with POD Farm 2.5 or better.   This is a step by step guide on using the Line 6 License Manager to install Model Packs on the POD HD500X and HD Pro X. If you have Line 6 Monkey installed, then you have Line 6 License Manager. There are a few things to check before we get started:   Make sure you have the latest version of Line 6 Monkey installed.