I can only tell you that my CS does not get the google play has stopped messages on firmware 02.06.06.00 . Any other firmware version, the files may not work. Don't know.
Also...CS mounts...You can get this one:
Amazon.com: Aluminum Foldable Tablet Stand Holder Extender Remote Controller Holder with Lanyard Support Crystal Sky Monitor Compatible for DJI Mavic Air/Mavic Pro/Mavic 2 / Zoom/Mini/Spark Remote Controller: Toys & Games
I use it on the Autel RC, as well as Mavic etc. All metal and very light. Great design. The bottom bracket goes into the phone holder of the Evo RC, and it holds well. Not perfect, but it works. You can use it just for the CS, or there is an additional phone/tablet holder that it comes with. Very well made. Because of the adjustable design, you can get the CS, phone/tablet up off the back of the evo RC and move the weight back towards your body, making the RC not front heavy. The bracket is not coming out of the phone holder on the evo rc, but you could use a velcro strap to hold it against the bracket if you were worried.