The last couple of years my AC68u did run nicely with the Merlin firmware up to the last 386.2_6 version.
I upgraded my main router with a AX88u and installed the same merlin 386.2_6 firmware and all seems running fine with a great improvement on GUI response times due to the faster CPU in the AX88u.
With 2 Asus routers now I tried to give that AImesh a go.
Unfortunately, whatever I tried it was not possible to get it installed on my AC68u H/W ver. A2 with Merlin 386.2_6.
Then I tried to install the latest Asus firmware: FW_RT_AC68U_300438643129. At startup of the router it immediately showed the extra option to set it as an Aimesh node in the quick setup screens, that option did never show up on the Merlin firmware. After a reset , the AC68u on Asus firmware was successfully added as a Aimesh node the first time.
Even removing the Aimesh node and installing 386.2_6 again, it was not possible to get the AC68u installed as an Aimesh node.
My question for
@RMerlin ; is this a specific issue for the AC68u H/W ver. A2 in the 386.2_6 (or older) firmware ?