Ok - XBR is more forgiving, so it's probably a safer bet (zeropaired image and all that).
I've made you an XBR image (see pm) with a KV injected that's been re-encrypted using your CPU key. AFAIK you probably won't need a re-encrypted config. You want to flash this via Debian/XBRFlash - to start with you'll have to open the donor XBR I sent with '360 Flash Tool 0.95' available at the usual places.
1. Open Flash Tool. Click 'Settings' and 'Keys'. Now copy and paste your CPU key into 'Key' - click 'OK'. Now in Flash Tool, open the donor XBR.bin, and copy and save the DVD drive type and DVD key you see on the right window in Flash Tool.
2. Now you need to flash the DVD drive in your 360 - basically you want Jungleflasher, and spoof + change the DVD that you've got to the drive type + DVD key you just got off the donor XBR nand.
3. Now Loooky's tut has a bit on how to update via Debian/XBRFlash here (rename the donor XBR.bin that I sent to 'updflash.bin'):
https://docs.google....mv5h_30dw33vpf4You want to start at section 9.1
Follow the tut only from that section, and then unplug the 360 for 30 seconds. It should now boot. If it doesn't, then the likelihood is that your NAND has physical bad blocks - you then have to hook up to LPT/USB and dump in order to work out where they are. Xell should still boot, unless these blocks are in the first 50 on the NAND.
Like I said though - if it does bork, by all means send it to me and I'll sort it out for you gratis

Is there a way to inject the current DVD Drive key into the configuration so I don't have to flash the drive?