Okay this may be a little unique. I have both the DMR, and NXDN upgrades on my 436. The DMR key is listed on MyUniden, whilst the NXDN key is not. I got my NXDN key direct from Paul back when he did a special for database admins when the NXDN support first came out. As I am going to be sending the 436 in for some repair work, (Maybe sending in my PRO-96 also). As they will most likely be replacing the motherboard (backlight, and USB port issues), I wonder is there any way to recover the NXDN key so I can reinstall the upgrades once the scanner comes back home. I already know that this will need to be done, and hoping they do not erase the SD card lol.