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Archer C20i is regularly dropping the 5Ghz Band

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Archer C20i is regularly dropping the 5Ghz Band

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.

Archer C20i is regularly dropping the 5Ghz Band

2020-08-20 15:32:57 - last edited 2020-08-21 09:30:43

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Registered: 2020-08-20

Archer C20i is regularly dropping the 5Ghz Band

2020-08-20 15:32:57 - last edited 2020-08-21 09:30:43

Model: Archer C20i

Hardware Version: V1

Firmware Version: 0.9.1 3.2 v003a.0 Build 170221 Rel.55462n

Hi,

I'm using an Archer C20i as a Wireless AP (ISP router/modem has wireless disabled) I have separated by SSID's across both bands - so I can choose by device which band to connect to.

Recently updated my firmware and now the router has an annying habit of dropping the 5 Ghz band completely. All connected devices lose their connection, and I can verify the 5Ghz band is missing using wi-fi utility apps. 2.4Ghz activity seems to be stable during this time, and the system log is not showing anything unusual at all.

This issue seems to be occuring once every couple of days, and the reliable fix seems to be a reboot of the router.

I'm convinced this issue is related to the recent firmware upgrade I installed. Anyone had similar problems, any ideas?

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#1

1 Accepted Solution

2020-08-21 09:30:38 - last edited 2020-08-21 09:30:43

Posts: 21780

Helpful: 5149

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Registered: 2018-12-24

Re:Archer C20i is regularly dropping the 5Ghz Band-Solution

2020-08-21 09:30:38 - last edited 2020-08-21 09:30:43

Hello,

You may try to download the previous firmware from the official website:

https://www.tp-link.com/uk/support/download/archer-c20i/#Firmware

Then refer to the below instructions to downgrade it:

https://www.tp-link.com/support/faq/2139/

May it help.

Nice to Meet You in Our TP-Link Community. Check Out the Latest Posts: Connect TP-Link Archer BE550 to Germany's DS-Lite (Dual Stack Lite) Internet via WAN Archer GE550 - BE9300 Tri-Band Wi-Fi 7 Gaming Router Archer BE800 New Firmware Added Support for EasyMesh in AP Mode, DoH&DoT, and 3-Band MLO Connection Archer AX90 New Firmware Added Support for EasyMesh and Ethernet Backhaul If you found a post or response helpful, please click Helpful (arrow pointing upward icon). If you are the author of a topic, remember to mark a helpful reply as the "Recommended Solution" (star icon) so that others can benefit from it.

Recommended Solution

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#3

2 Reply

LV1

2020-08-21 08:26:16

Posts: 2

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Registered: 2020-08-20

Re:Archer C20i is regularly dropping the 5Ghz Band

2020-08-21 08:26:16

@Tarpii Any one seen this issue before? Can anyone give me help downgrading the firmware? I'm sure it was the firmware update that has caused this.

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#2

2020-08-21 09:30:38 - last edited 2020-08-21 09:30:43

Posts: 21780

Helpful: 5149

Solutions: 2575

Stories: 21

Registered: 2018-12-24

Re:Archer C20i is regularly dropping the 5Ghz Band-Solution

2020-08-21 09:30:38 - last edited 2020-08-21 09:30:43

Hello,

You may try to download the previous firmware from the official website:

https://www.tp-link.com/uk/support/download/archer-c20i/#Firmware

Then refer to the below instructions to downgrade it:

https://www.tp-link.com/support/faq/2139/

May it help.

Nice to Meet You in Our TP-Link Community. Check Out the Latest Posts: Connect TP-Link Archer BE550 to Germany's DS-Lite (Dual Stack Lite) Internet via WAN Archer GE550 - BE9300 Tri-Band Wi-Fi 7 Gaming Router Archer BE800 New Firmware Added Support for EasyMesh in AP Mode, DoH&DoT, and 3-Band MLO Connection Archer AX90 New Firmware Added Support for EasyMesh and Ethernet Backhaul If you found a post or response helpful, please click Helpful (arrow pointing upward icon). If you are the author of a topic, remember to mark a helpful reply as the "Recommended Solution" (star icon) so that others can benefit from it.

Recommended Solution

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#3