AX-1800 Bricked after update. No LED

[vernie]

Solution to the problem is presented here. Thank you hansome.

GL-iNet AX1800 debricking by USB and TFTPD

You’re excited to upgrade to a custom firmware and ended up overwriting uboot with the wrong file. Router LED no longer lighting up when power is applied. Router no longer work as expected, no network and nothing you can do. Reset and debricking procedure using uboot not applicable at this state. When people say your router is bricked, generally it means it no longer function. The following procedure is provided by the helpful and kind GL-iNet staff (hansome). Text instructions were in Chine…