@anon57562829 @w000000t @mk24
Gents,
Thx so much for your assistance
I managed to get it working
Used this method:
Downloaded the FW from here :https://github.com/danielschmalhofer/Important-Openwrt-Things
Had to manipulate the HW ID using Hex editor ( Changed it to 0X0 instead of FF)
And used the method described here :https://openwrt.org/toh/tp-link/archer-c5-c7-wdr7500#tftp_recovery_de-bricking
After which I got HW ID verify OK and the firmware upgraded .
I had to update the package using CLI in order to install LUCI
https://forum.openwrt.org/t/need-modified-image-archer-c7-v2-product-id-verify-fail-bricked-bootloop/67576/12
Now the router is back to life
Thx for your time and efforts
LLAP