How to update firmware in R8000P bridged (not primary router) router?

[aragonl]

My current configuration is:  Modem to Model RAX45 (AX4300), then using bridge function to Model R8000P (AC4000). 

Is there a method to update the AC4000 firmware while in the above configuration?  I can't add the AC4000 to the app without removing the AX4300.

Thanks!

[Kitsap]

Strongly recommend you DO NOT update the firmware of anything via an app.  Way too many problems arise as a result.  Specifically corrupt firmware.

If you feel you need to update the firmware, I strongly recommend you do so manually via an ethernet connection cable to the device and using a web browser on a computer.  If that is not convienent from a location standpoint, disconnect the device, move it to perform the update and then move it back.