If you’ve got an Arris modem or router, for example, a blinking amber light is shown when a firmware ... but the primary router is still online, restarting them could be all that’s needed.
Connect the modem to a wall outlet with a coax cable and plug the modem into an electrical outlet. Connect devices to the modem wirelessly, or with an ethernet cable to a LAN outlet on the modem.
If you're constantly online for work, here is a crucial tip you must know on how to troubleshoot a bad internet connection.