18/07/2023: 17:45

  @David-TP, Hi David, the experience with Deco M5 V3.2 with firmware 1.7.1 Build 20230608 Rel. 74023 is bad and unusable.

Could you tell me how to downgrade to an earlier firmware version. I will send the email tomorrow. 

What I tried and did not solve the issue:

1. Connected new devices, tried old devices and forget and added it again.
   1. iPad WiFi 2022 with iPad OS 16.5.1
   2. iPad Air 2022 iOS 12.5.7
   3. OnePlus 5 LOS Android 13 TQ2A.230505
   4. Samsung S21 FE 5G (SM-G990B) Android 13, 1 June 2023.
2. I have tried to reboot the network.
3. Set manual DNS of 1.1.1.1 and 1.0.0.0.1.
4. Have two different internet providers, tried both and did a deco reboot. 

Sometimes I get the SSL issue and sometimes the connection is so slow the pages times out.
 

This site can’t provide a secure connection www(dot)omroepbrabant(dot)nl sent an invalid response.
Try running Windows Network Diagnostics.
ERR_SSL_PROTOCOL_ERROR

18/07/2023: 18:18

After some reboots it seems to work fine now.

18/07/2023: 22:50

Stopped working again. Can't reach gateway of deco. Checked multiple devices. Did a power cycle. Works again. Nothing in the log around 22:50 only at 23:02 when I pulled the plug. Going to check that page about firmware recover tomorrow. I thought app based settings for a router were nice but it ain't.