Xbox 360 S not accepting system update.

I've had my Xbox 360 S for a little over a year, since Christmas of 2012. Recently it has not been accepting the newest system update available. I've tried countless "resolutions" to the problem, restarting the wireless modem/ router and even attaching a
cable to it, restoring it to factory settings, erasing every bit of memory, removing all external accessories. There is most likely not a single thing that I have not tried. After the update fails there is an error code that appears but xbox support yields
no results. I've even tried entering it on multiple search platforms and still nothing, the Latter part of the code is 8007-0070. I've even received telephone support and they weren't able to figure it out either. Has anyone else had the same problem and been
able to resolve it? Is there something painfully obvious that I'm missing? Any information is appreciated.

:)

 

Xbox 360 S bricked after accepting mandatory system update

Just wondering for your two that it worked for, did your consoles tell you your HDD was corrupted? I have about 250 gb worth of patches, games, and save files, one is a lvl 89 elf on skyrim...

 

Xbox 360 S bricked after accepting mandatory system update

Update: I was not able to open the disk tray when the device was turned off. It would make the noise as I touched the button, but not open. After playing around a bit, I turned it on and tried the same... it opened. I inserted the disk I burned after a gamer
suggested to do so. It worked! I now have a working 360. It loaded the system update just fine from disk. It blows my mind that not one of the 7 people I spoke with at microsoft over the last 3 days ever came up with this.