topic Re: Wi-Fi Hub - Cannot Turn The 5 GHz Band Back On in Broadband

Wi-Fi Hub - Cannot Turn The 5 GHz Band Back On

R2223 — Fri, 11 Aug 2023 10:23:41 GMT

I temporarily switched the 5 GHz Wi-Fi band off on my TalkTalk Wi-Fi Hub (Sagemcom Fast 5364) and now when I go to turn it back on the menu shows the switch is ON but it still shows as disabled. Toggling it multiple times and rebooting the router did not help.

Wi-Fi

I did check if it’s just the screen that’s wrong (a glitch) but no, it really is disabled. None of my devices can detect that a 5 GHz network is present.

Also when navigating through the menus in the router I constantly get logged out (taken back to the login screen) whenever I click something. It’s totally random and not consistent.

I have not experienced these two issues before. My Hub recently self updated to the latest firmware (SG4K100174) and I think there maybe some bugs in it. Could TalkTalk look into this for me and advise.

Thanks

Re: Wi-Fi Hub - Cannot Turn The 5 GHz Band Back On

Karl-TalkTalk — Fri, 11 Aug 2023 10:31:14 GMT

Try a factory reset of the router and see if this helps.

Karl.

Re: Wi-Fi Hub - Cannot Turn The 5 GHz Band Back On

R2223 — Fri, 11 Aug 2023 13:39:02 GMT

Thank you for the reply.

I would prefer not to factory reset the router as I would have to reconfigure all my devices, reassign DHCP’s etc and have the Wi-Fi optimisation (auto channel changing) switched off again. It’s just not practical at this time as it’s been all setup for years.

Could the TalkTalk devices team see if this is replicable at their end? I just read this thread below which identifies my other issue (being constantly logged out) as a bug in the new firmware. I believe that this 5 GHz band toggle issue may also be a bug.

https://community.talktalk.co.uk/t5/Broadband/Sagemcom-Fast-5364-can-no-longer-access-Advanced-Settings-in-Hub/td-p/2977987/

Thanks

Re: Wi-Fi Hub - Cannot Turn The 5 GHz Band Back On

Karl-TalkTalk — Fri, 11 Aug 2023 13:43:04 GMT

If this is caused by a firmware bug etc, then this would be resolved in a future firmware update, To resolve now, if a reset did not work, we would supply another router, but this would need to be configured.

Karl

Re: Wi-Fi Hub - Cannot Turn The 5 GHz Band Back On

R2223 — Fri, 11 Aug 2023 15:07:21 GMT

As long as the team overseeing the firmware are made aware of this Wi-Fi toggle issue then I don’t mind waiting for it to be resolved. Thanks.

Re: Wi-Fi Hub - Cannot Turn The 5 GHz Band Back On

Sidious — Fri, 11 Aug 2023 21:05:26 GMT

Just a quick thought/question:-

I know you've suffered the router logging-out issue, but have you tried clicking on the "manage advanced settings" button (as seen in your screenshot), then "continue" when it asks if you want to proceed, it should then bring up a sub-menu with "Wifi 5GHz" on the right (it is on mine anyhow), on the top right of that sub-menu is a blue "cog" icon, click that blue cog and it should bring up a page "Wi-Fi 5GHz", followed by "Basic", "Wi-Fi", "Mesh", "WPS", "Advanced", and "MAC Filter" - but it should 'land' on Basic when the cog is clicked.

On that page, when my 5GHz is off, I get:-

Basic

Enable 5 GHz Wireless

OFF

Status

DOWN.

I'm just wondering if you could get to that menu and see if "Enable 5GHz wireless" is showing "OFF" or not. Even if it is showing "ON", maybe toggle it OFF for a bit, then toggle back to see if that wakes up your 5GHz.

Of course, you may have already tried this and found it doesn't work! Really annoying when settings are ignored on routers, peripherals etc.

Re: Wi-Fi Hub - Cannot Turn The 5 GHz Band Back On

KeithFrench — Sun, 13 Aug 2023 14:23:47 GMT

Hi @R2223

There is a bug in both V158 & V174, where if you disable either one or both Wi-Fi bands, they will not work correctly when re-enabled. The only current workaround is to perform a factory reset of the router's configuration.

I have advised TalkTalk of this.

Re: Wi-Fi Hub - Cannot Turn The 5 GHz Band Back On

R2223 — Mon, 14 Aug 2023 11:10:47 GMT

I managed to get into the menu but no, however I toggle 5 GHz on and off the status doesn’t change from DOWN.

Re: Wi-Fi Hub - Cannot Turn The 5 GHz Band Back On

R2223 — Mon, 14 Aug 2023 11:13:38 GMT

As long as the devices team are aware of this Wi-Fi band bug (which differs from the logout bug they already know about) then I will just wait till they issue a new firmware to get the 5Ghz band working again.

Could an OCE please confirm that they have received this report, thanks.

Re: Wi-Fi Hub - Cannot Turn The 5 GHz Band Back On

KeithFrench — Mon, 14 Aug 2023 12:08:03 GMT

I reported this bug back in V158 and since confirmed it still exists in V174, along with any other bugs that I know about, within a few days of testing this release. I passed this over to the devices team via my contact @Karl-TalkTalk

Re: Wi-Fi Hub - Cannot Turn The 5 GHz Band Back On

Sidious — Mon, 14 Aug 2023 21:22:13 GMT

Don't these firmware 'experts' actually test their drivers/wares before actually releasing them to the general public?!

Re: Wi-Fi Hub - Cannot Turn The 5 GHz Band Back On

Anonymous — Tue, 15 Aug 2023 05:51:36 GMT

Good morning,

Just to advise, this has been fed back to our Devices Team.

Thanks

Re: Wi-Fi Hub - Cannot Turn The 5 GHz Band Back On

moor76 — Thu, 23 Oct 2025 13:58:06 GMT

It’s now 23/10/2025 and the same problem still exists, ie can’t turn 5 gh band back on after disabling it to set up peripherals.

i had to do a factory reset to get round the problem .

Re: Wi-Fi Hub - Cannot Turn The 5 GHz Band Back On

KeithFrench — Thu, 23 Oct 2025 14:06:22 GMT

This is a very old thread belonging to another customer. If you want help, you cannot use someone else's thread. That said, there is currently no fix for this. I am waiting for new firmware to see if it has been rectified. I have not been advised of any date when this might happen.

To get help, you must start your own thread. To create your own thread, go to the main page for the board in question & click the "Start a topic" button.

TalkTalk insists on one thread per problem per customer. Please note, TalkTalk makes the rules, not me.

Thanks.

Re: Wi-Fi Hub - Cannot Turn The 5 GHz Band Back On

mandisa1-TT — Thu, 23 Oct 2025 14:29:54 GMT

Thank you so much for the support @KeithFrench

Hi there @moo76 Please start your own thread as advised by @KeithFrench

Re: Wi-Fi Hub - Cannot Turn The 5 GHz Band Back On

moor76 — Thu, 23 Oct 2025 15:09:24 GMT

I wasn’t asking for help , was only pointing that the same problem still exists 2 years on

Re: Wi-Fi Hub - Cannot Turn The 5 GHz Band Back On

KeithFrench — Thu, 23 Oct 2025 15:17:02 GMT

And I just confirmed that.