just found this from tmbinc:
there is a way to boot back into the "backup xell" (there are two xell versions in flash, the normal one, and the backup one.) Usually the normal xell is started, but you can start the backup one by either:
- Attaching a wired controller on the back USB port, and pressing the X button to powerup the box, or
- Pressing the windows-button on a remote control to powerup the box.
i just flashed back my original nand, works fine
just had a rather strange experience with the Xbox 360 which nerved me up pretty badly
I had left the 360 running for about half hour just stationairy in the dash on my TV.. So far didn't experience any issues yet.. Until i wanted to update it to 7371 dash... I turned it off.. Shoved the usb stick in, and turned it on it showed instant 3ROD code 0020.. I thought wtf.. I'm running original nand now, everything was ok... Pulled the usb stick out and booted it ten times , everytime 3ROD code 0020.. I thought I had stuffed my 360 lol
Until i disconnected the dvd drive and it booted into dash again? I'm thinking what is going on I pull the dvd drive and now it works again? Anyway with the 66xx dash now booted, I update to 7371 using USB.. turned it off, plugged the drive again... and again it showed me instant 3ROD code 0020 on powerup... I was baffled...
So i'm thinking the dvd-drive is stuffed causing 3ROD everytime because the nand is untampered with (i had just restored it).. Here's how I "fixed" it, I booted into dash without DVD drive, then I hotplugged the DVD drive.. After that the 360 rebooted without showing me 3ROD... It also now works fine with coldboot... no more 0020.. WEIRD or what? IDK what was going on maybe there's an explanation but i would not know xD
I get RROD as soon as I press the Windows button on the DVD remote apparantly current Xell work on Xenon only... Could i just take a known working nand image, and use nandpro like this to get a working xell image? :
nandpro 7371.bin: -w16 falcon_hack_updxell.bin 0
and then do this:
So if you have a working xell image t for your hardware:
nandpro WorkingXell.bin: -r16 XellFw.bin 0 40
nandpro XBR.bin: -w16 XellFw.bin
Inject the config blks, and kv, good to go