ZTE MF283+, is it supported and safe to flash via webUI

Installing and Using OpenWrt
5

https://downloads.openwrt.org/releases/21.02.3/targets/ramips/rt305x/

@anon89577378 wrote an excellent post, regarding tftpd64 in [Solved] Difficulty flashing a TL-WR902AC v3 with OpenWrt - #12 by anon89577378 IP and file name are obviously wrong.