Unexpected and unrequested firmware update 2 March 2026

UK_KH_User123 · Mon Mar 02, 2026 6:25 pm

Hello!

After losing power to my house (because it runs off the EPS output of my KH10.5) I discovered the inverter just had an update pushed to it which I did not request from my installer, nor from Fox, nor from the app itself (which only a week ago appeared the option to request an update manually).

It pushed me thusly:

Went from Manager 1.37 to 1.58
Went from Master 1.41 to 1.60
'Slave' unchanged at 1.01

This has never happned to me before (2.5 years on). I previously have emailed Fox UK support and requested an update.

Anyone else had this experience?

Is it correct 'slave' still sits at v 1.01?

I have a call in to my installer to see if he pushed it. Thanks for any insights!

MaterialBarracuda48 · Mon Mar 02, 2026 6:44 pm

Check the same question I asked about the Slave.
Dave replies 1 post below.
viewtopic.php?p=12031#p12031

UK_KH_User123 · Mon Mar 02, 2026 6:50 pm

Thanks for the link.

The strange thing is, after writing that, I noticed that the app update area shows that one "upgrade" is available and that is to take 'slave' from 1.01 to 1.02.

I haven't pushed that 'Upgrade Now' button yet but it is tempting so at least all three are up-to-date.

UK_KH_User123 · Mon Mar 02, 2026 6:52 pm

Oh, now I see that my data logger (W4 type) has an update available from 4.12 to 4.14. "Upgrade Now"???

<edit> I did it. Was quick and seems to still be working.

UK_KH_User123 · Mon Mar 02, 2026 7:26 pm

MaterialBarracuda48 wrote: ↑Mon Mar 02, 2026 6:44 pm Check the same question I asked about the Slave.
Dave replies 1 post below.
viewtopic.php?p=12031#p12031

Are you on 'slave' 1.02 with your KH? I may push the button so at least I'm in control of the timing.

MaterialBarracuda48 · Mon Mar 02, 2026 7:56 pm

UK_KH_User123 wrote: ↑Mon Mar 02, 2026 7:26 pm Are you on 'slave' 1.02 with your KH? I may push the button so at least I'm in control of the timing.

Yes I am on v1.02

UK_KH_User123 · Mon Mar 02, 2026 7:59 pm

Cool, thanks! ... I figured since 1.02 is the listed current version and it was offered I should keep the versions in-sync with each other. So I pressed the update button in the app and it successfully updated. That update did not cause a full inverter reboot so it didn't cause problems. I'm not sure if it's the manager or the master that causes the full reboot which kills the EPS output.

MaterialBarracuda48 · Mon Mar 02, 2026 8:07 pm

Makes sense that you are now up to date, at least mine has carried on working.