A: Approximately 5-8 minutes from download to reboot. The actual flashing is 3 minutes.
Some ISPs allow manual updates, but this is rare. If yours does, you would: sagemcom fast 5866t firmware update
A: Usually, no. Most updates preserve settings. However, major version jumps (e.g., from 2.0.x to 2.1.x) sometimes require a factory reset. Always back up your settings beforehand. A: Approximately 5-8 minutes from download to reboot
Sometimes, an ISP pushes an update, but the router fails to apply it, leading to reboot loops or a frozen status. you would: A: Usually