Two weeks ago I purchased a 2012 Grand Cherokee. My first jeep and so far I love it. It is a base E with some options so it has the 130 (RES) radio with Sirius and uconnect. I've read the threads on upgrading to a 430N (RHB) and am planning to do that.
My question is if the revision letters of the radios make any difference. I have seen 2011 radios with part numbers 5064839AG and 5064839AH. The 2012 radios are available as 5091188AB and 5091188AC. Is there any functional difference between these revisions?
Functions are typically the same. But if possible try and get the latest revision, improvements/bug fixes are made as running changes. If buying used, a later revision is more likely to have less hours of use.