@mhoam I noticed similar issue recently. After upgrading ER605 to 1.3.0, Firefox started being detected as not supported. Unfortunate decision for them to restrict to official Chrome/Edge only if that really is their intent.

  @dsj 

Thanks for the confirmation, I was considering trying Firefox.

I wonder if this has been a considered decision or simply(!) an error/bug caused when trying to improve performance on Chrome.

Any idea how to escalate within TP-Link?

  @mhoam

Firefox does work as expected, the ER605 on Firmware 2.1.2 signs on and is useable as before.

It was a surprise to me when a Brave Private Window also worked normally! I cleaned the cache but a normal Brave window is still rejected with "Unsupported Browser"

I suspect something in the TP-Link code is not being handled correctly rather than a specific choice by TP-Link to stop support for Brave, especially as a Private Window works!

This finding would suggest a difference between the default settings for normal and Private windows may be causing a problem, any ideas as to what?