Samsung SM-J400G Firmware Overview
What is the latest SM-J400G firmware?
J400GDXS9CVE1, released August 2, 2022 for region PNG with Android 10. It is a security update on bootloader binary 9. The archive holds 2 official builds for this region.
Is the Samsung SM-J400G still getting updates?
Most likely not: there has been no new firmware since August 2022, so Android 10 is the last version this model got. The final builds below are still the best choice for a clean reinstall.
Can I downgrade the SM-J400G firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. All decodable builds in the archive share binary 9:
- Binary 9 — since Nov 2021
SM-J400G firmware for region PNG
How to Flash SM-J400G Firmware
Put the Samsung SM-J400G into Download Mode, load the BL, AP, CP and CSC files into Odin on a Windows PC and press Start. Pick a build with Bit 9 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.