Hello, cm9 back to stock bricked my tablet 16gb. I had to use parted and then Adam Outlers total wipe. This worked but I can't register with B&N, I get the message to try again or call customer support. I notice the serial # on the info tab is different than the one on the back of the sd card slot. Any ideas on editing this serial # ? cm7 internal works fine if I must, but would like the option of going back to stock. Thanks Again