Motorola Mb8611 Firmware Today

No. Cable modem firmware is signed and encrypted. Downgrades are impossible unless your ISP pushes an older version (which they almost never do).

Ensure you are on firmware 6801.9.2.0 or higher. If you are stuck on an older version, disconnect the coax, factory reset the modem, reconnect coax, and call your ISP to push the update manually. motorola mb8611 firmware