Samfirm Tool Linux -

Solution: Samsung occasionally rotates their encryption nonce. Update your SamFirm-Py fork:

git pull

Or switch to Bifrost, which is updated more frequently.

# Add the official repository
wget -qO - https://git.sr.ht/~grimler/bifrost/raw/master/install.sh | bash

Or download the AppImage from the releases page: samfirm tool linux

wget https://github.com/zacho1111/Bifrost/releases/download/v1.0.9/Bifrost-linux-x86_64.AppImage
chmod +x Bifrost-linux-x86_64.AppImage
./Bifrost-linux-x86_64.AppImage

The syntax is identical to the Windows SamFirm:

python3 samfirm.py -m SM-G973F -r DBT -c

Argument breakdown:

To download without decryption (for manual verification):

python3 samfirm.py -m SM-N975F -r BTU

This is the closest you can get to the original SamFirm experience. It requires Python 3 and a few dependencies. Or switch to Bifrost, which is updated more frequently

Ensure Check CRC32 and Decrypt automatically are ticked. Or just let the Python version handle decryption.