Deco M4 Selecting signal source
I'm in a situation where I have a "mesh" network of four M4R(EU) ver 2.0 Decos; dev2 is in basement, the living_room Main deco is on ground floor and master_bedroom and office are locate one floor above. The master_bedroom has a strong connection and signal to the Main Deco and the office device is near the master_bedroom so it should be linkin to living_room via master_bedroom, but instead it's opting for a weak 2.4ghz connection to the Main Deco.
Choosing the "optimize network" option on the mobile software doesn't seem to do anything and there's no option to manually choose the signal source in the web ui either.
I've read there has been a beta firmware available previously that would include such a feature; could I have such a version to be installed in the problematic office -device? Mind you I'm currently running the latest release version 1.5.0 so I've also read that the "previous beta" cannot be installed anymore as it would be a downgrade - am I right and is there a version available to fix this problem at the moment?