i fixed it with
sudo wget -O /var/lib/dnsmasq/test.bin https://bigota.miwifi.com/xiaoqiang/rom/r4a/miwifi_r4a_firmware_72d65_2.28.62.bin
this rom and on linux using tftp but the issue is all in chinese so i need to flash openwrt for sure so can you guys help i am on 2.28.62 now and want help to flash openwrt which one should i go with