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There are still a bunch of the old original H&S units out there on the market. The update files are still available on the Diesel Tuner Pro site. There are a lot of shops that are selling the MCC unlock code so you can write your own tunes. The MCC software is free to download. It looks pretty impressive in it's granularity, so that might be what you are looking for.
In addition, you might want to look into AlphaODB and an MX bluetooth dongle.
I used AlphaODB to turn on the backup camera in my '15 R/T's UConnect, worked great. However, it's not well documented, but there are a lot of people posting procedures they have discovered.
It's a piece of software that is sort of in it's infancy. The programmer is in Europe somewhere and seems to be specialized in FCA products. He's just now adding the 7.5-10 Cummins trucks, but already has quite a lot of the later models online.
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