Samsung M40 SM-M405F Firmware Download free

Samsung Galaxy M40 SM-M405F U2 Firmware Download

This firmware is ideal for users looking to unbrick, fix boot loops, downgrade/upgrade Android versions, or resolve system errors on the Galaxy M40 SM-M405F.

Table of Contents

🔍 Firmware Details

Attribute	Value
Model	SM-M405F
Device Name	Samsung Galaxy M40
Region	India (INS)
CSC Code	INS
Binary/Bootloader	U2 (important for compatibility)
Latest Build	M405FDDU2CUK1 (Android 11)
Older Builds	M405FDDU2CUD2, M405FODM1ASF4 (Android 9 Pie)
Android Version	11 (One UI Core 3.x)
Security Patch	November 2021
File Format	Multi-file `.tar.md5` (AP, BL, CP, CSC)
Source	androidhub.co.in

📂 Available Firmware Files

🧰 Tools You Need

✅ Samsung USB Drivers
✅ Odin Tool v3.13.1 or higher
✅ A Windows PC
✅ Original USB cable
✅ Extracted firmware .tar.md5 files

⚙️ How to Flash Firmware

⚠️ Important: Flashing wipes data unless you use the HOME_CSC file. Backup all personal data before proceeding.

Download and extract the firmware zip file.
Install Samsung USB Drivers on your PC.
Boot your phone into Download Mode:
- Power off > Hold Volume Down + Power + Volume Up
- Connect to PC and press Volume Up again when prompted.
Open Odin.
Load the firmware files into their respective slots:
- BL → Bootloader file
- AP → System image
- CP → Modem
- CSC → Use CSC for full wipe, or HOME_CSC to preserve data
Ensure Auto Reboot and F. Reset Time are checked.
Click Start and wait for the green PASS message.
Your device will reboot with the new firmware.

📱 Galaxy M40 Key Specs

Feature	Specs
Display	6.3″ PLS TFT LCD, FHD+
Chipset	Snapdragon 675
RAM	4GB / 6GB
Storage	64GB / 128GB
Rear Camera	Triple: 32 MP + 8 MP + 5 MP
Front Camera	16 MP
Battery	3500 mAh with 15W fast charging
Launched with	Android 9 (Pie), upgradeable to Android 11

✅ Conclusion

Download the correct U2 firmware version (e.g., M405FDDU2CUK1) and flash it using Odin to resolve system issues or restore to stock. Ensure your firmware binary matches (U2) to prevent soft brick.