Q: What is official firmware?
This is the firmware that is installed on a mobile device when it is shipped from the factory or sold by a mobile carrier. Official firmware can be updated OTA by the device vendor or carrier.
Non-official or custom firmware (also known as a custom binary or ROM) contains modified system files. These types of firmware might have been installed for testing purposes or to root a device. Note that if your device has these types of firmware, you might encounter problems installing a secure Knox container or activating a Knox license.
Q: How can I check if my device has official firmware?
- Get your device log.
- In the log file, search for ro.product_ship.