Unlocked bootloader + TWRP custom recovery installed.
This method is less common but works on nearly all Samsung devices without needing root. efs file samsung
The unique 15-digit serial number used to identify your device on global networks. Baseband Version: Unlocked bootloader + TWRP custom recovery installed
Do not delete or edit any file in /efs manually. Even changing a single character can permanently corrupt the partition. efs file samsung
This requires a full firmware package that contains the EFS component (not all firmware packages include it). Most users rely on TWRP instead.