problem is ,

https://downloads.openwrt.org/releases/21.02.1/targets/ath79/generic/openwrt-21.02.1-ath79-generic-tplink_archer-c5-v1-squashfs-factory.bin

https://downloads.openwrt.org/releases/21.02.1/targets/ath79/generic/openwrt-21.02.1-ath79-generic-tplink_archer-c5-v1-initramfs-kernel.bin

https://downloads.openwrt.org/releases/21.02.1/targets/ath79/generic/openwrt-21.02.1-ath79-generic-tplink_archer-c5-v1-squashfs-sysupgrade.bin

saying firmware doesnt matchs tried even in changed name with renaming .bin file, with factory, upgrade, router name..

notice I had to do the same with a wa901v4 from the same brand, spend three hours in finding the right filename among wa901ndv4_tp_recovery.bin or factory.bin here it is not the same :x