Archer C50v3 Openwrt

openwrt-ramips-mt76x8-c50-v3-squashfs-sysupgrade.bin (3,4 MB)
openwrt-ramips-mt76x8-c50-v3-squashfs-factory.bin (7,6 MB)
openwrt-ramips-mt76x8-c50-v3-squashfs-tftp-recovery.bin (7,8 MB)

openwrt-ramips-mt76x8-c50-v3-squashfs-sysupgrade.bin (3,4 MB)
openwrt-ramips-mt76x8-c50-v3-squashfs-tftp-recovery.bin (7,8 MB)

build 3:
openwrt-ramips-mt76x8-c50-v3-squashfs-sysupgrade.bin (3,4 MB)
openwrt-ramips-mt76x8-c50-v3-squashfs-tftp-recovery.bin (7,8 MB)

build 4:
openwrt-ramips-mt76x8-tplink_c50-v3-squashfs-sysupgrade.bin (3,4 MB)
openwrt-ramips-mt76x8-tplink_c50-v3-squashfs-tftp-recovery.bin (7,8 MB)

build 5:
openwrt-ramips-mt76x8-tplink_c50-v3-squashfs-sysupgrade.bin (3,4 MB)
openwrt-ramips-mt76x8-tplink_c50-v3-squashfs-tftp-recovery.bin (7,8 MB)

i locked the device using this version.
When I turn it on, all the LEDs flash and turn off continuously.