Popp 701721 not reacting to local temperature changes after OTA

[ikarisan]

Hi!

I am using two "Popp 701721" TRVs on my radiators.
One seems to be an eT093WRO and the other one an eT093WRG.
Both of them got OTA updates recently. But now the eT093WRO is acting strange.
I cannot change the target temperature locally. If I rotage the knob, nothing happens and I have to change the temperature via Zigbee.

eT093WRO : Firmware 01.28.0008 01.28 (28.09.2022) <== no longer working
eT093WRG : Firmware AAAABBBBCCCCDDDD (28.09.2023) <== still works, but suspicious version

I already did a factory reset and repaired both devices.
It may be a coincidence, but could the problem be related to the OTA update?