Download Official Stock Firmware
Use samloader to download official stock firmware from Samsung’s servers. You can also look at SAMMOBILE to see the latest for this device.
Install samloader
pip3 install --user git+https://github.com/nlscc/samloader.git
Download Firmware
# Create download directory:
mkdir ~/Downloads/samsung
# Check the lastest available firmware:
samloader --dev-model SM-G980F --dev-region BTU checkupdate
# Download the specified firmware version:
samloader --dev-model SM-G980F --dev-region BTU download --fw-ver G980FXXUDEVA9/G980FOXMDEVA9/G980FXXUDEVA9/G980FXXUDEVA9 --out-dir ~/Downloads/samsung
# Decrypt firmware:
samloader --dev-model SM-G980F --dev-region BTU decrypt --fw-ver G980FXXUDEVA9/G980FOXMDEVA9/G980FXXUDEVA9/G980FXXUDEVA9 --enc-ver 4 --in-file ~/Downloads/samsung/SM-G980F_3_20220126141002_sqgfarrj77_fac.zip.enc4 --out-file ~/Downloads/samsung/SM-G980F_3_20220126141002_sqgfarrj77_fac.zip
Extract Firmware
unzip ~/Downloads/samsung/SM-G980F_3_20220126141002_sqgfarrj77_fac.zip -d ~/Downloads/samsung/
Download Mode
- Download and install Samsung Android USB Driver | Samsung Developers
- Power off and boot into Download Mode by connecting it to the PC whilst holding volume up and down.
- Once in Download mode, press the volume up key.
Flash with Odin3 v3.14 on Windows
Begin by loading the firmware binaries in the Odin tool as instructed below:
- First, click “BL” and select the BL firmware file (BL_xxxxxxxxxxx.tar.md5)
- Click “AP” and select the AP firmware file (AP_xxxxxxxxxxx.tar.md5)
- Next, click “CP” and select the CP firmware file (CP_xxxxxxxxxxx.tar.md5)
- Finally, click “CSC” and select the CSC firmware file (CSC_xxxxxxxxxxx.tar.md5)
Once all the firmware files have been loaded in their corresponding slots, click the “Options” tab in Odin and uncheck “Auto Reboot” (This is important). Finally, click “Start” to begin the flashing process.
After the flashing process is complete, you should see a “PASS!” message in Odin and your Galaxy S20 can be rebooted from Download mode.
You can close Odin and disconnect your phone from the computer.
After a while you should see the “SAMSUNG” boot logo, and the ROM should boot.
[!tip]
On Android 13, to stop the intermittant “Access denied” pop-up, disable “Samsung Wallet Digital Key” from being allowed to “Appear on top”.
