用官方提供的openwrt源码编译固件，得到如下列表的文件，应该选哪个文件，怎么刷呢？
16571 config.seed
2967 openwrt-ar71xx-nand-device-gl-e750.manifest
1558016 openwrt-ar71xx-nand-gl-e750-kernel.bin
3145728 openwrt-ar71xx-nand-gl-e750-rootfs-squashfs.ubi
4454400 openwrt-ar71xx-nand-gl-e750-squashfs-sysupgrade.tar
5242880 openwrt-ar71xx-nand-gl-e750-ubi-factory.img
3014656 openwrt-ar71xx-nand-root.squashfs
1557904 openwrt-ar71xx-nand-uImage-lzma.bin
4918604 openwrt-ar71xx-nand-vmlinux.bin
4923728 openwrt-ar71xx-nand-vmlinux.elf
1572864 openwrt-ar71xx-nand-vmlinux.lzma
1568024 openwrt-ar71xx-nand-vmlinux-lzma.elf
4096 packages
1235 sha256sums
路由器当前状态：可以正常开机，和进入uboot界面
谢谢！