Today I updated the firmware of my 3 decos (P7) to 1.4.4 Build 20200221 Rel. 65392. After the update two of them (the secondary ones) keep losing connectivity. I tried to hard reset it, re-add to the network. It works for a couple of seconds, but less than 5 minutes after the led turns green it gets disconnected again. Also already tried it putting it very close to the main unit (about 3 meters away) but anyway it keeps getting disconnected.
I'm considering downgrade to an old firmware, but I honestly couldn't find a way to do this. By the way, my decos appear as model M5 (and not P7) in the app and also when I connect to the management website via regular browser. This has always been strange, I don't believe this has something to do with my current problem, which really seems to be triggered by this firmware update. I have mentioned this situation in a separate post https://community.tp-link.com/en/home/forum/topic/162822?replyId=428562
But getting back to the problem: I have a feeling that the app installed a wrong firmware:
When I log in to the master device via normal web browser the admin site shows me that I have a "M5(1.0)" - I suppose that 1.0 is the hardware version, right? But it has firmware "1.4.4 Build 20200221 Rel. 65392", which is the latest I find on the website WHEN I SELECT hardware version 3 (!) (see https://www.tp-link.com/de/support/download/deco-m5/v3). But when I select hardware version 1 (as in https://www.tp-link.com/de/support/download/deco-m5/v1/) the newest firmware presented seems to be 1.3.1 Build 20190617 Rel. 47476.
Could it be that my decos behave badly because the app downloaded a firmware for the wrong hardware version?
If yes, how can I revert to an older, correct firmware version? I tried to do it via web application but it doesn't seem to work.
Thanks a lot in advance guys!