F660.bin file has signature "F609" It's a Type 2 payload (ZLIB+AES128ECB) The file structure is valid and recognized All known encryption keys have been tried without success search for the Option 1: Research F660-specific keys Check if there are any F660-specific encryption keys documented elsewhere Look for F660 device documentation or community resources The key might be related to the device's serial number, MAC address, or other hardware identifiers
F660.zip