Rt3 Upgrade 651 Na 663 Build 890 Can42 New |verified| | DIRECT × 2024 |

If your 2008 Grand Cherokee or 2009 Chrysler 300 still has the original RT3 running 6.51, you are literally watching a computer running on its last legs. Update it. Save the hard drive. Unlock the CAN features. And enjoy the fact that your 18-year-old car now has software stability that rivals a modern aftermarket unit.

This article is written for automotive enthusiasts, firmware modders, and owners of older Chrysler/Dodge/Jeep vehicles equipped with the original RT3 navigation system (often found in Grand Cherokees, Commanders, Durangos, and Chrysler 300/Magnum/Charger models from the mid-2000s). If you are still daily-driving a mid-2000s Chrysler product—a Jeep Grand Cherokee (WK), a Dodge Durango (ND), a Chrysler 300, or a Commander—you are likely familiar with the love-hate relationship surrounding the RT3 Navigation Radio . Also known as the REC (Radio Entertainment Center) or the "MyGig" early cousin, the RT3 was cutting-edge in 2005, but by 2025 standards, it feels glacial. However, a legendary firmware upgrade path has emerged from the depths of forum boards and Mopar enthusiast groups: the "651 NA to 663 Build 890 CAN42 New" update . rt3 upgrade 651 na 663 build 890 can42 new

is the pinnacle. After this, Chrysler moved to the RB5 (MyGig 2.0) and abandoned RT3 support entirely. By performing this upgrade, you have effectively installed the "Windows XP SP3" equivalent for your car radio—the final, most stable version ever made. Conclusion: Breathe Life into the Old Beast The rt3 upgrade 651 na 663 build 890 can42 new is not just a firmware update; it is an act of automotive preservation. For the cost of a blank DVD and 15 minutes of anxiety, you transform a glitchy, slow, freezing head unit into a reliable, snappy, feature-unlocked navigation system. If your 2008 Grand Cherokee or 2009 Chrysler