Rooting image for the Samsung SM-J400F, Galaxy J4, built for binary U3 on Android 9, packed as a 17.9 MB TAR. Flash it with Odin while the phone is in download mode. Such files typically replace the boot image with a patched one. Confirm the bootloader revision on the device is U3, because a mismatched binary is rejected. Rooting trips the Knox flag and can void warranty services, so take a full backup first and keep stock firmware for recovery.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @mobile_jump2. Enginerys does not host this file.
All sources (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @mobile_jump2 | 18 Apr 2021 | Open file on RM Schematics |
| @ShareMan_Electronic_Files | 5 May 2025 | Open file on RM Schematics |