If you are updating your radio using a direct download link (such as one hosted on a private file hosting site), USE EXTREME CAUTION as to not install the 8.4A (RA3) update onto the 8.4AN (RA4) and vice-versa.
There is a different version of 13.38.52 for the RA3 and for the RA4. MAKE SURE YOU INSTALL THE PROPER ONE FOR YOUR RADIO.
***If you download the file from the uConnect Update Site, you will not have anything to worry about, as it will only provide you with the correct file based off of your VIN.***
I just updated my post to reflect this. Thankfully, I got an error message and it did not brick my radio. From here on out, people PLEASE post the radio you have to avoid this possible problem in the future. There is no way to know through the direct link what radio it is for unless you tell us what you successfully used it on!