Experienced backer upers help needed!

[fiNgA]

Hi
I seem to be having a problem doing my first back up on my new xbox,i got it pre chipped from an online store fitted with an executer 2.1, which states that it uses a new no patch hack and runs any kind of media even cdr's especially as its a newer model xbox

now the game im tryin to back up is JSRF, ive ftp'ed to the box and transferred all files across, used xISO to make an iso and burned it using recordnow max 4.5 30 day trial version, put it in my xbox and it doesnt recognize the disc, 1 coaster successfuly created

I then tried doing the data burn method and followed it exactly step by step, 2nd coaster created

I then thought maybe it does need patching, acquired craxtion prog and that told me it dont need it so that obviously isnt the problem, im not sure what else i can try, the chip works as i obviously have evox installed

Is it the game? Im loathe to try another one now as i have only 2 spare blanks left, im using Mirror Platinum DVD+R's in a ricoh MP5125A with latest firmware, yet the site i bought the console from stated that the xbox has no problems using cheapo unbranded dvds of either format, it even runs cheapo unbranded cdr's as i put my mame emulator on one.

Can anyone here help me out with any info please? ive been through all the sticky's twice now and i really really dont want to take my 80 gig hdd out of my pc and put it in the xbox as i really need it in my pc

TIA
finga