@Pewill Hi, do you still remember the last firmware version? If it is 1.9.0 Build 20250722, it can be downgraded directly via the web UI. https://www.tp-link.com/en/support/download/deco-m5/#Firmware...

@MCH-83 Hi, it needs to be installed via the local web UI: How to upgrade the firmware of TP-Link Deco- method 2 via web UI. Best regards.

@bramezan Hi, thank you very much for the update. Have you also submitted the support ticket? -If yes, can I have the ticket number so that I can forward the case to the senior engineers for further...

@Tatzumi Hi, thank you very much for the feedback. The Gateway on the IPV4 settings is usually the management IP of the ISP-provided router. Best regards.

@gravity773 Hi, thank you very much for the update. I didn't have any other suggestions. If you can consistently reproduce this issue, it is recommended to send an email to support.forum@tp-link.com...

@Kabeljauws Hi, thank you very much for the feedback. I'd like to follow up on your case via email and ask the senior engineer for further assistance. Could you please update the email with the...