Motorola MB8611 is a popular DOCSIS 3.1 cable modem known for its 2.5Gbps port, but it has a complex history with firmware updates—especially for Xfinity (Comcast) users
Modem reboots 2-3 times a day, especially during high traffic. Cause: Older firmware versions (pre-19.2.18) had a memory leak in the DOCSIS 3.1 OFDM decoder. Fix: Ensure you are on version 19.2.18 or higher. If your ISP won't push it, try downgrading your speed tier temporarily. Some ISPs push specific firmware only to subscribers paying for Gigabit or higher. motorola mb8611 firmware
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