Samsung Galaxy J4 SM-J400G Combination File U2 (Factory_SW). They help bootloop fix, imei fix. Besides, they also help you to bypass frp.
Samsung J400G Combination File is a raw firmware for engineers and developers to run the device & can fully read and test the equipment of the device.
Size: 1.5 GB
Model Name: Samsung Galaxy J4
Security Patch Level: 2