Home Network Community > All Threads > [SOLVED] (Archer C7) Wifi network access problem after upgrading to latest firmware
< All Threads

[SOLVED] (Archer C7) Wifi network access problem after upgrading to latest firmware

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
12

[SOLVED] (Archer C7) Wifi network access problem after upgrading to latest firmware

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
[SOLVED] (Archer C7) Wifi network access problem after upgrading to latest firmware
[SOLVED] (Archer C7) Wifi network access problem after upgrading to latest firmware
2021-01-09 11:41:00 - last edited 2021-01-22 02:15:06
Model: Archer C7  
Hardware Version: V5
Firmware Version: c7v5_[20201120-rel50406]_2020-11-20_14.00.44

Hi,

after upgrading my Archer C7 EU to firmware c7v5_[20201120-rel50406]_2020-11-20_14.00.44 to fix SMB/CIFS auth access, some device now cannot connect to the wifi network.

 

Sky-Q decoder (Humax), Xerox Workcentre 3225 and my Xbox360 (slim model) stopped working.

I tried with other wifi and they work ok, so it is not an HW problem, and they see the C7 network fine but cannot join it, the log on the router shows nothing.

Even with an open network they cannot join. There's a way to at least downgrade to a lower firmware? with the beta all worked fine.

 

Thanks. 

 

 

  0      
 
  0      
 
#1
Options
1 Accepted Solution
Re:[SOLVED] (Archer C7) Wifi network access problem after upgrading to latest firmware-Solution
2021-01-21 19:03:54 - last edited 2021-01-22 02:15:06

At last, problem solved. I don't know if it is a coincidence but doing the following solved the problem.

 

I factory reset the router from the UI.

Then, (hard) factory reset with the reset button.

Then reflashed the FirmWare.

 

Now, all the devices connect no problem. laugh

 

 

 

Recommended Solution
  0  
  0  
#12
Options
12 Reply
Re:(Archer C7) Wifi network access problem after upgrading to latest firmware
2021-01-09 15:00:12

@agony 

 

For that FW it is stated (in release notes) that you won't be able to downgrade to a previous FW release.

Try with these wireless settings and see if you are able to connect (for both 2.4 and 5 GHz bands):

 

 

If the issue persists hard reset the router and re-configure from scratch, then test again.

If this was helpful click on the arrow pointing upward to make it blue. If this solves your issue, click the star to make it blue and mark the post as a "Recommended Solution".
  0  
  0  
#2
Options
Re:(Archer C7) Wifi network access problem after upgrading to latest firmware
2021-01-09 15:30:42
yes, those are my exact settings. well, i'll try a factory reset as soon i go home. thanks for the reply
  0  
  0  
#3
Options
Re:(Archer C7) Wifi network access problem after upgrading to latest firmware
2021-01-09 15:37:18 - last edited 2021-01-09 15:42:40

Just make some notes on your configuration before resetting, to be easier for you restoring them back.

If this was helpful click on the arrow pointing upward to make it blue. If this solves your issue, click the star to make it blue and mark the post as a "Recommended Solution".
  0  
  0  
#4
Options
Re:(Archer C7) Wifi network access problem after upgrading to latest firmware
2021-01-20 01:43:42 - last edited 2021-01-20 01:47:01

@Ivaylo 

sorry, I was able only today to do some test. Anyway, resetting to factory default didn't do nothing. Printer, skyq-decoder and xbox360 don't connect to wifi 2.4 or 5G.

I repeat, they work correctly doing an hotspot with my mobile phone or a stupid old access point i got lying around (it works as a client too if i connect it to wifi then printer etc to it via ethernet).  This behavior happened as soon as I upgraded to the latest firmware, until beta it all worked fine.  

  0  
  0  
#5
Options
Re:(Archer C7) Wifi network access problem after upgrading to latest firmware
2021-01-20 02:15:15 - last edited 2021-01-20 11:07:49

@agony 

 

It sounds like a FW issue and the inability to revert back to the previous FW release, makes things annoying.

Why don't you contact the tech support and ask them what your options are ? Maybe they will provide a solution for that.

 

If this was helpful click on the arrow pointing upward to make it blue. If this solves your issue, click the star to make it blue and mark the post as a "Recommended Solution".
  0  
  0  
#6
Options
Re:(Archer C7) Wifi network access problem after upgrading to latest firmware
2021-01-20 13:34:11 - last edited 2021-01-20 13:36:32

Nevermind, my bad, got the form. It took me aoutomatically to the Italian site, things are a little different,

 

@Ivaylo 

thanks for the reply, where I can contact the tech support?

  0  
  0  
#7
Options
Re:(Archer C7) Wifi network access problem after upgrading to latest firmware
2021-01-20 13:46:34 - last edited 2021-01-20 14:17:51

@agony 

 

Try this link.

Meanwhile you can try one more thing - disable these two settings (WMM) and reboot the device, then test if that will resolve the problem:

 

 

If this was helpful click on the arrow pointing upward to make it blue. If this solves your issue, click the star to make it blue and mark the post as a "Recommended Solution".
  0  
  0  
#8
Options
Re:(Archer C7) Wifi network access problem after upgrading to latest firmware
2021-01-20 21:15:19 - last edited 2021-01-20 21:18:06

@Ivaylo 

nothing, same behavior on all the three.

 

contacted support, let's wait if they let me know something.

 

btw, tried with a friend's C7 with an old FW, all works fine. Dunno what changed with this FW revision but, for me at least, something broke.

 

  0  
  0  
#9
Options
Re:(Archer C7) Wifi network access problem after upgrading to latest firmware
2021-01-21 06:11:39

@agony 

 

One more confirm, is your C7 v5 an EU version? Are all other phones and laptops can still connect fine?

 

Was there any error message when you try to connect to the network on the Sky Q decoder, Xerox Workcentre 3225, and Xbox360? Have you tried with different channels on the C7 for both the 2.4G and 5G network?

 

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.
  0  
  0  
#10
Options
Re:(Archer C7) Wifi network access problem after upgrading to latest firmware
2021-01-21 13:02:18

@Kevin_Z 

Hi.

Yes is an EU V5 version.

 

The firmware was downloaded from the italian site (link):

https://static.tp-link.com/2020/202012/20201222/Archer%20C7(EU)_V5_201120.zip

 

No, there are no error messages. Only the printer shows a "Disconnected" warning. Nothing on the router's log.

All have the same behavior, like when a device is trying tp join a network with a wrong password (pwd, is not the issue, same behavior with an open network). SkyQ (5Ghz is reserved) and X360 are 2.4 only, Xerox is both.

Any of the my other devices works fine 2.4 and 5GHz, Laptop (W10 or CentOS) three android (6.x, 10.x) phones, an XboxOneX and a 2.4GHz cheap noname AP/Repeater/Client. 

 

Yes, I even tried factory default config (SSID and password) no WAN and/or other devices connected.

 

Until and included the beta FW you recommended me in this thread, all worked fine.

 

 

 

 

  0  
  0  
#11
Options
12

Information

Helpful: 0

Views: 2963

Replies: 12

Related Articles
[Solved] Archer C7 Doesn't offer 5G Wireless on access point mode
1148 0
Archer C7 unable to access internet as AP
1095 0
Archer C7 v5 is emitting a hidden network
68384 10
Archer C7 V1 Problem Solved, Finally !!!!
714 0
Archer c7
1206 0
Set-up WIFI shedule Archer C7 - AC1750
2098 0
About Us
Press
Copyright © TP-Link Systems Inc. All rights reserved.