For a reason I'm not really sure of, this was never made.
I only guess it was felt like it wasn't needed though I have a ton of backups on my retail that it was a good surprise my RGH happens to be pre flashed - even if it wasn't, on a RGH you can read out the DVD key of phat Lite On so no problems there as flashing a 360 drive is fairly simple imo.
I do, admit the fact you can't even do this in Linux is kind of odd, for back in the day when it would be feasible.