OpenWrt installation on Archer C59 v1 via TFTP

Hello,
I'm lost here.

I flashed my Archer C59 via TFTP. I got a communication with the router. The log of the tftp software said the transfer of the tp_update.bin file was completed. But the router stay on the stock firmware.
What i'a missing here ???

Which version of the c59 is it?

https://git.openwrt.org/?p=openwrt%2Fopenwrt.git&a=search&h=HEAD&st=commit&s=Archer%20C59

This is the CA v1