D-LINK DIR-1960 First Time Install

Could anybody point me in the correct install method for a first time on D-Link DIR-1960 A1

I am assuming I install via the GUI Recovery and start with the first file and use the second and third from the WRT Gui

Is this correct?

https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=11bff24b3e1b10088bf6832447d18a9c9b17ef25

Thanks but this does not let me know which file to use. Also I was reading something about the possibility of having to decrpt. Is this required for this router?

should be the factory image as in https://openwrt.org/toh/hwdata/d-link/d-link_dir-1960_a1

Warning! Be aware that there are multiple reports of the 5 GHz WiFi frequently failing with routers using the MT7621/MT7615N combination.

If you're intent on installing/using OpenWrt for the DIR-1960,
You can use the D-Link Recovery GUI procedure to install the current FACTORY 21.02.0 stable release.

No need to install three firmware consecutively.
Just install/use "FACTORY"