Upgraded Datalogger firmware to 1.09 and lost 5s updates
I'm at a bit of a loss. I noticed in the Cloud 2.0 app that I could update the W6 datalogger firmware to v1.09 from v1.08. I had 5s updates working in v1.08 (this firmware on a new install). Pressed update, waited, all went well. No errors. Everything back online.

The issue is, I seem to be on 5 minute updates now.

Has anybody bumped into this before, and do you have a fix?

The documentation says that for 5s updates the firmware needs to be v1.08 or greater.
Re: Upgraded Datalogger firmware to 1.09 and lost 5s updates
A discussion here yesterday: viewtopic.php?p=15050#p15050

The short answer was the 5s refresh took a bit of time to "recover" for me it worked, then stopped working, and recovered a few hours later.
Re: Upgraded Datalogger firmware to 1.09 and lost 5s updates
Thanks.

9 hours later it seems to be back.
Re: Upgraded Datalogger firmware to 1.09 and lost 5s updates
Good to hear, must take some time to settle (no idea why though)
Re: Upgraded Datalogger firmware to 1.09 and lost 5s updates
I also encountered the same issue after upgrading my datalogger from firmware v1.08 to v1.09 this morning. Now my 5-second refresh bubble icon has disappeared and it only updates every 5 minutes. I hope after 9 to 12 hours this feature will come back and work as other users reported.

I also encountered another issue after the firmware update: my battery showed as offline. Luckily, Gemini instructed me to power off the inverter and battery and turn them back on again; this resolved the battery offline issue.
Re: Upgraded Datalogger firmware to 1.09 and lost 5s updates
Confirming 9 hours later, my 5-second update works as well. I could pinpoint that 9-hour window—it’s definitely a "hidden" rule of the new v1.09 security handshake that Fox ESS doesn't mention in the update.
Re: Upgraded Datalogger firmware to 1.09 and lost 5s updates
I also have the W6 Datalogger and upgraded to the 1.09 firmware, also lost the 5 second updates and now only getting 5 minute updates. It’s been 3 days now and still can’t get the 5 second updates back.
I’ve restarted my inverter and my Datalogger and nothing…!
I logged a support call with Fox 3 days ago and they haven’t even bothered to respond so that says a lot about their support….wondering now if Fox was a good decision…?
Re: Upgraded Datalogger firmware to 1.09 and lost 5s updates
kevinbg007 wrote: Fri Apr 03, 2026 9:35 pm I also have the W6 Datalogger and upgraded to the 1.09 firmware, also lost the 5 second updates and now only getting 5 minute updates. It’s been 3 days now and still can’t get the 5 second updates back.
I’ve restarted my inverter and my Datalogger and nothing…!
I logged a support call with Fox 3 days ago and they haven’t even bothered to respond so that says a lot about their support….wondering now if Fox was a good decision…?
It's either unplug/replug in the datalogger.
Or go through the process to add your WiFi credentials again, it might just wake it up.
Re: Upgraded Datalogger firmware to 1.09 and lost 5s updates
kevinbg007 wrote: Fri Apr 03, 2026 9:35 pm I also have the W6 Datalogger and upgraded to the 1.09 firmware, also lost the 5 second updates and now only getting 5 minute updates. It’s been 3 days now and still can’t get the 5 second updates back.
I’ve restarted my inverter and my Datalogger and nothing…!
I logged a support call with Fox 3 days ago and they haven’t even bothered to respond so that says a lot about their support….wondering now if Fox was a good decision…?
Gemini instructed me to reset my dongle password and wait for 9 hours; the 5-second refresh fixed it on v1.09.

"Reset the Dongle Password:
​Access your Fox ESS dongle settings (usually via the local Wi-Fi configuration page or the FoxCloud app).
​Reset or re-enter your Wi-Fi/Dongle password. This often forces a handshake refresh with the Fox ESS servers."
Re: Upgraded Datalogger firmware to 1.09 and lost 5s updates
I’ve unplugged the Datalogger waited 60 seconds and plugged it back in, still not getting 5 second readings.
I’ve reset the WiFi and even put it onto a different WiFi network, waited over 9 hours, still not getting 5second readings back.
Today I’m going to shut my KH10 inverter down and restart it - fingers crossed but not hopeful.

Still no response from Fox support :-(

Failing that I’m going to try and go back to v1.08.
Re: Upgraded Datalogger firmware to 1.09 and lost 5s updates
kevinbg007 wrote: Sat Apr 04, 2026 10:17 pm I’ve unplugged the Datalogger waited 60 seconds and plugged it back in, still not getting 5 second readings.
I’ve reset the WiFi and even put it onto a different WiFi network, waited over 9 hours, still not getting 5second readings back.
Today I’m going to shut my KH10 inverter down and restart it - fingers crossed but not hopeful.

Still no response from Fox support :-(

Failing that I’m going to try and go back to v1.08.
Maybe try changing your Foxcloud password as well to see if that will sync with the server.
Re: Upgraded Datalogger firmware to 1.09 and lost 5s updates
I restarted everything and that didn’t work so have now changed my password as suggested. I’ll see later tonight if that works or not.
Nb still no response from fox support.
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