A: Yes, but only using the TFTP method. The web GUI often blocks downgrades because of anti-rollback protection (ARB).
If you have never performed a , you are likely leaving speed on the table, exposing your network to known vulnerabilities, and missing out on critical stability fixes. zte mf286r firmware update
A: This is a legacy device (released ~2018-2020). Official updates are rare (maybe 1 per year). Most updates come from ISPs or the community. A: Yes, but only using the TFTP method