Can anyone flash my fritzbox 7530?

Hello. I tried to flash openwrt on my fritzbox 7530, unfortunately after endless attempts I still couldn't. Can someone please do this for me?

Greetings, Martin

Did you follow https://openwrt.org/toh/avm/avm_fritz_box_7530?

Yes, I tried these instructions, but from point 4 it is only Chinese for me ...

https://pjo2.github.io/tftpd64/

Don't forget to disable the firewall on the system hosting the TFTPd, and set the IP on the host, as in the guide.