Hi Joel my Deus is about 3-4 years old . When I did the update to 5.2 , in the box that asks you about the coils , only my low LF coils showed up even thou my Hf coil was on the charger . After the update I tried to add the serial number of my Hf coil and it would not pair with the remote anymore . I had no issues with version 4.1 that worked with my LF coils and Hf coils. I reread the instructions on the 5.2 update and sure enough on the bottom line it said that the Hf coils would not work with this version . That’s why I was asking if anyone knew how to return the remote back to the older version . One thing I’m glad I didn’t do was update my ws5 headphones . I believe the headphones will still work with my Hf coils without the remote . But I’m going to call the cops Deus service center to see if they can help me to revert back to the 4.1 to make my Hf coils work again or maybe a patch so that version 5.2 will work with the Hf coils ( the round and the elliptical white Hf coils) . Thanks