how do i make a dvd file from an iso ,so that i can burn and play on x box 360
If you don’t already have the software to do it.
Whilst free. It is that good you should feel obliged to donate.
See their guides.
If you have an .iso and .dvd file you just burn it to a dvd+r dl by loading the .dvd file into imgburn.
Your 360 has it been flashed ?. You haven’t really explained what you have tried.