从这里下载官方版:https://downloads.lede-project.org/snapshots/targets/ramips/mt7621/lede-ramips-mt7621-r6220-squashfs-sysupgrade.tar 或者从中科大的镜像里下载:http://mirrors.ustc.edu.cn/lede/snapshots/targets/ramips/mt7621/lede-ramips-mt7621-r6220-squashfs-sysupgrade.tar 在刷写新的固件那一栏,选...