cable modem errors and unplanned reboot

My ARRIS modem restarted unexpectedly on Saturday evening, October 24. I previously lost internet on October 18 and had to manually reboot it to restore service. After recovery, the signal levels consistently look good: downstream power approximately -1 to -3 dBmV, SNR approximately 39–41 dB, and upstream power approximately 46–47 dBmV.

On October 23 I also recorded 1,616 downstream uncorrectable errors concentrated at 471 MHz. After the latest restart, the counters are back to zero.

Please check the modem’s reset/offline history around Saturday evening and determine whether this was maintenance, a firmware update or commanded reset, loss of DOCSIS connectivity, or another cause. Please review historical upstream receive quality and ranging/registration events rather than relying only on its current good signal readings.