@Wildcat_1 I am assuming this update should be done with the factory reset, flash firmware, factory reset process?
This one can be a pain for some folks that have used the expanded capabilities this firmware offers like multiple profiles (more than 2), and setting up different profiles based on month of the year.
The older GUI without as many features could be set back up in minutes from scratch. This one will be a little longer if the factory reset process is still the recommended approach.
I do prefer the full approach I listed before for reset, flash, reset to ensure full flush, yes. The reason for this is I’ve experienced first hands the issues with non flushed HW registers etc. However, the newer GUI FW is getting more resilient in these builds. It’s something I’ve been working on and feeding back to Dahua devs as a top, side priority to the bugs since it impacts multiple cams across multiple model lines and is integral to cam maintenance processes. Therefore with this build you can try as standard upgrade process. I tested this for you on the 3 cams + T180s on this new build and at the moment is looking good.
HTH