TPLink Archer C5 V2 Stripped Firmware?

Hi can anyone help me convert this stock firmware to a stripped firmware? I know I messed up and should have checked first wether tftp works before flashing to OpenWrt, now I just want to flash it back to stock but tftp is not working. Can someone help me make a stripped firmware for this model? Thank you very much.

Here's the link of the stock firmware just incase:

I assume you've already read https://openwrt.ifw.cn/toh/tp-link/archer-c5-c7-wdr7500#return_to_factory_firmware ?

Thank you, I managed to go back to stock firmware by using the flash firmware in Openwrt GUI with Force checked but now my concern is, the version always stuck in 0.0.0.0 same with the Build, I did try the US first then this JP firmware different versions but it displays same output. Before openwrt was installed, it should have displayed 3.1.7 Build xxxx something. Is this normal?

q1