Bought a new NightHawk R7800 . Configuration portal is not accessible

Thank you for sharing the Information.

unfortunately it did not work.

i managed to fix my issue by disconnecting the R7800 from my comcast router, perform a factory reset of the net gear router, and configure it without the internet from an old mac through wired network.

Then I linked it to the Comcast router again, performed a firmware upgrade and now everything seems to be working fine.

i can now use the genie app and configure the router without anymore issues.