Update Samsung Galaxy J4 SM-J400G to Android 8.0.0 Oreo. The Android Oreo firmware for Galaxy J4 SM-J400G are available for download, for firmware detail you can see it below. It also available for some countries, you can visit free download for SM-J400G firmware. If you get error message “SECURE CHECK
Tags: Android 8.0.0 Oreo, firmware update, flashing rom, Galaxy J4 SM-J400G, stock rom