openssl dgst -sha256 -sign private.key -out output.sig output.pkg cat output.pkg output.sig > final_firmware.pkg This method requires the device to be in "Developer Mode" or have "Unsafe Package Validation" disabled. Part 5: Method 3 – The "Better" Script (One-Click Solution) Manually doing the above is tedious. The community has developed a Python script that automates the process while maintaining safety checks.
# Read the BIN file with open(bin_path, 'rb') as bin_file: firmware_data = bin_file.read() cisco convert bin to pkg better
If you work with Cisco collaboration or unified computing products (like Webex Room Kits, SX/MX Series codecs, or Cisco Unified IP Phones), you have likely encountered the frustrating firmware format dilemma. You download a file from Cisco.com, and it ends with .bin . Your device, however, stubbornly demands a .pkg file. openssl dgst -sha256 -sign private
dd if=cisco_firmware.bin of=extracted_payload.gz bs=1024 skip=256 (This skips the Cisco bootloader header, usually 256KB. Adjust based on binwalk output.) # Read the BIN file with open(bin_path, 'rb')