Upgrading to 5238 transforms the aging RNS 510 into a more capable system by adding features that were originally missing in early versions: Modern digital radio compatibility.
Use a high-quality DVD-R or CD-R. Firmware 5238 is small enough for a CD, but many enthusiasts recommend a DVD-R burned at the slowest possible speed (1x or 2x) to prevent read errors. rns 510 firmware 5238