Using the latest version of x-plore file manager (donated) on android 8.0, I'm trying to copy a file to a USB drive I have plugged in via the app.
However on repeated occasion it doesn't let me copy a file over to the USB, is this a restriction of x-plore file manager, if so any working alternative apps?
Or do I need to format the USB stick via AndroidTV?
I thought it was a basic function to be able to copy/move over a file from internal (built in TV memory to external (USB)...
It's a restriction by the native USB-OTG driver in firmware. You can turn on "Use X-plore USB-driver" in X-plore's configuration. It will instead use its own USB-OTG driver to bypass this writing restriction ( http://www.lonelycatgames.com/docs/xplore/usb-otg ). But it only supports writing to FAT32 formatted USB drive. MiXplorer ( https://labs.xda-developers.com/store/app/com.mixplorer ) has similar USB-OTG driver option and can write to FAT32 & exFAT.