The epoxy can't be physically removed without great risk of ripping off the electronics on the underlying circuit. The epoxy can be chemically dissolved, but w

The epoxy can't be physically removed without great risk of ripping off the electronics on the underlying circuit. The epoxy can be chemically dissolved, but would deteriorate the outside of the device as well. It the epoxy isn't completely cleaned out, then refilling it with new epoxy would look messy. With great care and skill, it could be done with little damage, but would be time consuming.