I have the Mecool Now KA2. It came with android 10.
Around a month and a half ago, mecool announced an android 11 update for this device. Here
The update is not available on the device as a GOTA (via google plays services) update, or via the "OTA Updater" app on the device.
I've emailed mecool about a half a dozen times asking if they could provide the update, but they have not responded at all. I'm wondering if anyone else has been able to get mecool to provide the update, or maybe has a newer KA2 device that came with android 11 and knows how to dump all of the partitions?
I put this together for a cousin who does not understand tech and doesn't follow directions very well. It basically automates Troy's steps to enable adoptable storage on the ONN 4K box and was written for it but it works fine on my TCL android tv. Includes needed adb files. I can start a list of devices it works with if you try it on another device.
As with anything, it's presented as-is, your liability to use it blah blah.
Troypoint post
https://troypoint.com/android-tv-adoptable-storage/
Files