I make this little thread to explain how to install the vivaldi browser on the JingPad.
If you try to install the “ARM deb” package from the vivaldi main download page, it won’t install because it’s the armhf version (32bits).
Instead go to the older versions of vivaldi (https://vivaldi.com/download/archive/) and download the latest version labeled arm64.
Then you will be able to install it like any other compatible deb package, from the graphical installer or via the command line.
I hope it will help you !