Hi  @MuTun 

For your case, please try firmware recovery as below:

How to recover the router when it bricked

If the problem still exists, the product is likely to have a hardware problem. Please contact local support as soon as possible to inquire about warranty services:

https://www.tp-link.com/support/contact-technical-support/#Hotline-Support

  @Joseph-TP 

Thanks Joseph-TP

I tried to update to the latest version and it worked normally.

(Archer BE800_V1_1.1.6_240808)

But I need to use version 20230914 for testing.

After re-uploading the firmware version 20230914
It takes a long time to reboot.

Waiting after one day then keep check it's worked normally.

Restarting manually requires long time.

And the RJ45 connection to the AP is unstable. The LED keeps flashing.

謝謝約瑟夫-TP

我嘗試更新到最新版本，一切正常。

(BE800_V1_1.1.6_240808)

但我需要使用版本 20230914 進行測試。

重新上傳韌體版本20230914後
手動重新開機需要等待很長時間。

並且RJ45連線到AP不穩定.LED持續閃爍.

Hi  @MuTun 

We have reported the issue to the support engineers, they will likely reach out to you via email to continue to troubleshoot your issue. Please check your email box and confirm.

我們已將問題報告給支援工程師，他們可能會透過電子郵件與您聯繫，繼續解決您的問題。請查看您的郵箱並確認。