This was all to complicated and time consuming to figure out.
I ended up buying an auto calibration matt and you place it once and no measuring is required. But proper placement on flat ground and no wind is crucial.
When we update an fyt 7862 to dudu6, is anything required to maintain 360 calibration?
I see this in config.txt "persist.syu.camera360 = 0“ I'm assuming changing 0 to 1 would keep the settings?