CoachStreamr

Hi- i have a new RT--AC68U that i have been working for ( seems like ) months with ASUS tech support trying to get it to work with my Mobley ZTE....NADA. I do have an older TM-AC1900 that works great with the ZTE, but i am trying to set up a route for my daughter. I have looked at your threads on Merlin, and am ready to give it a go, but not sure how to do the hook up and download....any help you can give me would be appreciated.
Jim AKA Relgel
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i downloaded the merlin for the router, but do not know how to transfer it to it....physical hookup and next steps.