I just updated my firmware to 1.4 from 5.3 and got that same error. Loads originals but get an error about updates and or other problems before load. Th 360 games original and back ups all say play dvd or just load to the white error screen. I am going to try to reflash again. I have a sam ms25.

I was reading about other people having the same problem but there have been no answers other than drive replace. anyone find out the cause?

with the change from xtreme to iXtreme, the firmware checks the stealth of the image and prevents it from booting if it is not good.

redo your backup from the original with XBC or schtrom and a Kreon/Samsung/Benq drive and all will be fine.

you may have to do this for your old backups

soso

thanks for the advice. i had 1.4 before and went back to 5.3 to back up some of my games. now i went back to 1.4 for security reasons. i ripped all the games myself with my sam drive and they all checked good with mulleter and scm. it's been a while so i'll try again. i may have left the key out now that i think about it more. if it won't work i'll try 5.3 again. movies play and i read that is likely the key not being correct. plus most i have had and worked before with 1.4. i think i'm just dumb and forgot the key. been a long day.

do not give yourself such a tough time. Get a Kreon drive or a spare Samsung/Benq with a connectivity kit
much easier

soso

Thanks I should look into that. Much easier than swaping firmware...I'm sure I'll fry something doing that eventually anyway. I fixed it. I just left out the key. It all works except one of the games. It keeps coming up mixed media but passes all the other checks in mulleter and scm. Any other verifications progs I should know about. Would like to re rip it but don't want to change the firm again right now. I'll just have to use the original for now until I feel like messing with it again now that I got it all good again it doesn't seem to worth tearing it apart for something trivial..