@ the Wizzard,
ms25 and ms28 are more or less the same drive, so you don't need to worry about that.
use the 53a-ms25.bin
you can use the make xtreme fw file to make the xtreme firware. pretty self explanatory.
but, it's basically a little batch program that asks you a few questions. i think it asks which drive you have and whether you want a,b,c, or d
choose a
and it should build the fw for you.
and yes you can flash in JF, just make sure you have a valid backup of the original fw.
flash like you normally would.
and always check your games in abgx. make sure it has split vid, and tick the box that says "adjust angle 359"
everything should be good and you should be undetectable on live...supposedly.
i've been on for 2-3 days now, still fine.