Well, I would recommend to do the fix… You would have to log in to every device anyway for a forced downgrade…
If I understood right, it is only necessary to do this on the capsman to get it up again, right?
No, every CAP needs this. (At least if it’s set up the way I understood.)
I upgraded one cAP ac to 7.19 for testing and I wonder why everything works for me… Well, after a year I found out that I didn’t set certificates until now and I’m running on “none”… it was “temporary” solution, sure 
I’m glad that i’m safe 
thanks a ton
I just consulted the documentation and honestly I do not know if my capsman uses certificates or not.
“export verbose” just gives me this:
/interface wifi capsman
set enabled=yes upgrade-policy=suggest-same-version
And the documentation is unclear. https://help.mikrotik.com/docs/spaces/ROS/pages/224559120/WiFi#WiFi-CAPsMANGlobalConfiguration
ca-certificate (auto | certificate name ) Device CA certificate, CAPsMAN server requires a certificate, certificate on CAP is optional.
But my CLI shows another possibility: “none”
So I don’t know now: if not explicitly set - does it default to “none” or to “auto”?
Anything @MIKROTIK has to say about this?
Of course certificates aren’t really required when you set up your home access points on a closed internal network…
To much work! I wait for 7.19.1 Update this night! MT is a good company. They will do that!
Gibt es da vielleicht irgenwelche python-scripts, denen man eine text datei mit user, passwort und ip-adressen geben kann, und die das dann machen?
7.19.1 will not be released today, but 7.21_ab10 has these fixes, you are welcome to try it here: https://box.mikrotik.com/d/c9a81d98ce5d495ea9a0/
English please.
But yes, that would be an option.
Where does it say it’s not for hAP ac2? On the contrary, the official documentation lists ac2 as a compatible device (as opposed to RB4011). It goes on to list what you are gaining and losing, but nothing about running out of space.
Compatible Audience, Audience LTE kit, Chateau (all variants of D53), hAP ac^2, hAP ac^3, cAP ac, cAP XL ac, LDF 5 ac, LHG XL 5 ac, LHG XL 52 ac, NetMetal ac^2, mANTBox 52 15s, wAP ac (RBwAPG-5HacD2HnD), SXTsq 5 ac
In my opinion “compatible” means it will function properly with the exception of documented lost features (Nv2 etc).
With that being said, I’m not sure why it’s not working for some people. The one I upgraded has only 160 KiB left, but it works. I will try another one in few days where I have a bit more complex configuration (VLANs, WireGuard). I also should mention that I netinstall all devices after purchasing them, don’t use any extra packages, don’t use anything saving to flash like graphing or logs.
It is nice of them to even release the new drivers for old devices, but it would be even nicer if they split out device-specific drivers like was mentioned above.
Have you looked into Ansible? I don’t use with RouterOS since I manage only a handful MikroTik devices, but use it professionally with Linux. It’s extremely powerful and flexible tool (and free). Making changes to a huge number of devices is precisely the use case it was built for.
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reselect-interval=1d or reselect-interval=12h…24h (not sure this last syntax is correct) is an interval, this means AP / CAPs will perform background scan (without disconnecting devices), if a better channel is available between the given time the device will switch disconnecting devices.
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reselect-time=00:00:00 or reselect-time=02:00:00..03:00:00, this means AP / CAPs will perform background scans with the ability to switch channels at midnight or between 2AM and 3AM.
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reselect-interval=7d reselect-time=02:00:00..03:00:00, means the device will check for better channels every 7 days between 2AM and 3AM.
Is this correct?
Even then you will have to update every device manually.
How dare you?
You’re the idiot.
There have never been any problems with bb-upgrade-7.6, and it’s MikroTik’s responsibility to make sure these things don’t happen, not mine.
And about the topic, is this: http://forum.mikrotik.com/t/netinstall-on-rm3011-fails-need-help-technical-questions/183302/1
And who made you update the devices in production with software that was just released yesterday???
But how do you work? Didn’t you even take a separate test?
Successfully upgraded from 7.18.2 to 7.19 three devices with 16.0 MiB of memory with wifi-qcom-ac drivers with minimal configurations: hAP ac2 (almost original configuration, 216 KiB free), cAP ac (no CAPsMAN, 1 WiFi network - 208 KiB free), cAP XL ac (no CAPsMAN, 1 WiFi network, - 168 KiB free).
No, they autoupdate. That’s the reason why I came to all this problems. I trusted the word “stable”. But I must say for good to Mikrotik it worked fine the last 5 to 10 years. Maybe I will change my policy now. Thank you for all the friendly answeres and help.