Always take a NANDroid backup before modifying system files. While this specific file is low-risk, a mistake in the permissions folder can occasionally cause stability issues.
This is the most crucial step. Long-press the file, go to "Attributes" or "Permissions," and set them to 644 (rw-r--r--) . androidhardwareusbhostxml file download 2021
If your phone’s motherboard doesn't physically output power to the USB port, adding this XML file will not magically enable OTG. You may need a "Y-cable" to provide external power to your USB device. Always take a NANDroid backup before modifying system files
Connecting Arduino or other microcontrollers to your phone. The Content of the File go to "Attributes" or "Permissions
You cannot simply "download and install" this like an APK. If your device isn't rooted, you won't be able to write to the /system folder.