NTG4-RER software / flash questions

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I am looking at installing this unit on my 15 jku.

Is there anyway to do the flash without going to the dealership?

How do I upgrade the software to the latest version?

Thanks for any assistance!

Salty Soul Jeep Shirt

Article source: http://www.wranglerforum.com/f40/ntg4-rer-software-flash-questions-2013522.html