Let's start again posting something just to be able to remember how I did it in the future 😅
docker image from jumanjiman/tftp-hpa
download and unzip firmware
docker run -t --rm -p 69:69/udp -v $(pwd):/tftpboot/spa/:ro jumanjiman/tftp-hpa
http://<phone_ip>/admin/upgrade?tftp://<ip>/spa/<firmware>.bin
