You are exactly right, that is the method i followed. works fine as stand alone router, but like you said, AiMesh a no go. sounds like i have about 10 min of work left to do, haha. thx!
i think its just my MACs then. It was not mentioned in the guide i followed, but that was for only for flashing a single router, nothing to do with AiMesh. thx!
What Method did you use to convert your TM-AC1900? i bought two as well, followed guide to convert, seemed to work, able to flash this latest for RT-AC68U, but no AiMesh to be found in the GUI..