To upgrade a Hedgehog to a Hedgehog 4X, you will need either a software upgrade or a software and hardware upgrade. If it is a generation 1 Hedgehog, then the console will need both a software and hardware upgrade. If the console is a generation 2 Hedgehog, then the console will need just a software upgrade.
Steps to Solution
A generation 2 HedgeHog will look exactly like the picture below
The generation 2 HedgeHog will have ALL of the following ports
A generation 1 will look similar to the picture below. If the console does not have ALL of the ports listed above, it is a generation 1 HedgeHog