I believe you should stick with a max size of 64 kilobytes for the best interoperability. Windows 10 expanded the maximum cluster size from 64 to 2048 kilobytes (2097152 bytes per cluster) in the Spring of 2018.
The open-source world patched util-linux almost immediately to be able to read the partition structures off of such disk, but it will take a while ...
I managed to transfer files via Total Commander's WiFi plugin. Both users should have TC + Wifi plugin installed. One of them is set up as a server and will present you with a QR code. Take a photo of the code with your phone.
The other user then scans this QR code from the phone and you can transfer files easily between the to users as long as the server is ...
This fixed it for me using android 11
Run android emulator with
Android/Sdk/emulator/emulator -avd Pixel_5_API_30 -writable-system --writable-system
mount -o rw,remount -t ext4 /system
Make needed changes and change system back to read only with this
mount -o ro,remount -t ext4 /...