SD Card is read only

In my observation, the SD Card is mounted as read-only so I can’t copy and delete files on it.
This is the case with 3rd party file managers. The built-in one seems to have write access to the SD Card. I assume this app has more privilege to the system?

It would be cool if other file managers can work on SD card because they usually have more features and even have FTP servers for transferring files to PPM.

I am having a similar issue. Formatted using Linux laptop, re-formatted again as removable storage using PPM hidden settings, but the issue remains. Same sd can be written to just fine by my Linux laptop. Screenshot below is XPlore app (verified app has storage permission enabled on PPM), using 1.0.29and 1.0.32 firmware…