I tried updating to 13146 with EFB 5.20. I choose aud clamp and Tray Open SMC (dunno why) i build all through xellous. After building it, i then flashed with flash360. I encountered "zero-paired" error; i flashed anyway (dumb, i know). It flashed, now the 360 turns on, i can access the main menu via the Xbox button, i can switch menus, and I cant go to dash or anything, i can see xexmenu installed. When i tried it, it just goes to black screen, i can still access menus but thats it. All i was left with was xell reloaded (free60). I tried to update nand with new updflash.bin using nand recovered from flash360 and bestpig. Xell doesnt seem to discover the updateflash.bin. I tried updating xell using xell-1f.bin and xell-2f.bin, I renamed these to updxell.bin, updslot0 (not discoverable) I get unknown hackimage error, my dvd drive doesnt work either. I dont know much about the Xbox or who jtagged it. Im stuck with just my nand that I recovered from flash360 that might have bad blocks, and updateflash, that I used to flash. Im not sure what to do now, any help would be great!