Disco 3 EPB!!!

Hello all I'm hoping someone can enlighten me if its worth fitting the superseded module for the EPB? I had my handbrake suddenly jam on my Disco 3 (30'000 miles auto diesel), with no previous signs of problems or noises then suddenly the famous screech when I went to disengage the handbrake and that was that! All attempts to manually over ride it failing even trying the diagnostic machine wouldn't budge it so the 9" angle grinder came out and we were free. Problem is the handbrake light now flashes at me from the dash, probably something to do with not being able to reset the module. I've seen that there are 4 or 5 supersedes for this part however I don't want to waste my money fitting one unless Land Rover has it sorted?