@Artur.Aragao 

There is a new version 2.3.0 Build 20250428 Rel.18967 that seems more smooth, to upgrade you need to downgrade to 2.2.6 first. Then you upgrade from Omada firmware console. You can SSH into your router and run a roll-back to downgrade to a previous version.

  @MR.S the new firmware is released https://static.tp-link.com/upload/firmware/2025/202505/20250523/ER605(UN)_V2.20_2.3.0%20Build%2020250428.zip

  @phongtom 

ok, yes then you can upgrade directly. on the controller it is still listed as RC..

  @MR. S 

So. When I tried to downgrade, it wouldn't let me. It reported an error and that the firmware wasn't for the device.
Which made me think that the installed firmware didn't allow this process due to some peculiarity of this version. However, I couldn't find anything mentioning this.

  @phongtom

I used this version and managed to upgrade.

I need to test and observe more.

I don't have the other link active, but I noticed that the behavior of the sum of the bands wasn't very good. Initially with 2.2.6 it indicated correctly, but with the last one before this one, the values ​​were somewhat distorted.

Another very big problem was some degradation with the use of DNS and slowness.

It's too early to say that it's solved it now, but I really appreciate the help provided with the new firmware.

If I continue to have problems, I'll try to downgrade to 2.2.6.

  @phongtom 

I tried to revert to 2.2.6, but it said the firmware was invalid.

This new firmware is VERY difficult to use.

  @phongtom 

I tried to return to 2.2.5 that I had saved here and it wasn't possible either.

  @Artur.Aragao 

I don't think you can downgrade from 2.3.0 to 2.2.6. The solution is to do an emergency downgrade. If you upgrade from 2.3.0 to the latest 2.3.0, you can't use rollback to go back to 2.2.6

https://www.tp-link.com/nordic/support/faq/3062/

  @MR.S

I noticed something very peculiar with the loadbalancer.

I don't have the primary link on WAN1, and only have WAN2.

The internet access became completely unstable.

I had to set the loadbalancer to 0:1, because 1:1 caused this abnormal behavior. DNS error, slow access, drops.

I set it to 0:1 and it went back to normal, although I still found it a little strange at times.

Shouldn't the ER605 V2 handle this correctly? If access to the router is active, but there is no connection, should it not switch?

I think I now understand why the links are not working properly and should consider a delay in using both. I didn't have this problem with 2.2.6.

Could you give more details about this?

  @MR.S

I will continue testing this RC.
It is back to normal now.
How bizarre.
But it has returned to normal in the way I mentioned above. 0:1.

Thank you very much for the indication of the firmware recovery mode.

If I need this, it will be very useful.