def flash_image(device, image_path): print(f"Flashing image_path to device") cmd = f"dd if=image_path of=device bs=4M status=progress conv=fsync" subprocess.run(cmd, shell=True, check=True) print("Flash done. Verifying...") # Basic readback check (optional: compare first 16MB) verify_cmd = f"dd if=device of=/tmp/verify.img bs=16M count=1 status=none" subprocess.run(verify_cmd, shell=True, check=True) orig_hash = hash_file(image_path) new_hash = hash_file("/tmp/verify.img") if orig_hash == new_hash: print("Verification passed.") else: print("Verification FAILED!") sys.exit(1)
LibreTech Flash Tool (LFT) Overview The Libre Computer Flash Tool (LFT) is a command-line utility designed to flash bootloaders and operating system images onto MicroSD cards or eMMC modules for Libre Computer single-board computers . It ensures bit-accurate writes, which is critical for boards that may fail to boot when using standard tools like BalenaEtcher due to specific write optimizations or corruption. Core Functionality libretech-flash-tool
The is fully auditable. Every line of code that touches your hardware is open source. Furthermore, if you are flashing coreboot, the tool verifies SHA256 checksums of the new firmware against the official coreboot build server, preventing man-in-the-middle attacks. Core Functionality The is fully auditable
The tool is essentially a sophisticated wrapper script (written in Python/Bash logic) that orchestrates lower-level utilities: The tool is essentially a sophisticated wrapper script