Samsung SM-M307FN Firmware Overview
What is the latest SM-M307FN firmware?
M307FNXXU4CWE3, released June 22, 2023 for region XSG with Android 11. It is a feature update on bootloader binary 4. The archive holds 2 official builds for this region.
Is the Samsung SM-M307FN still getting updates?
Most likely not: there has been no new firmware since June 2023, so Android 11 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-M307FN firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. All decodable builds in the archive share binary 4:
- Binary 4 — since Oct 2022
SM-M307FN firmware for region XSG
How to Flash SM-M307FN Firmware
Put the Samsung SM-M307FN 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 4 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.