Xiaomi r3g pleas help

my new router (xiaomi r3g) was flash rom dev to get ssh! Then I was command :
mtd write openwrt-ramips-mt7621-mir3g-squashfs-kernel1.bin kernel1
mtd write openwrt-ramips-mt7621-mir3g-squashfs-rootfs0.bin rootfs0
nvram set flag_last_success=1
nvram commit
Then my router only yellow led, It cant boot and and release ip to pc! Please help me :((!