A couple of days ago after an update on my Samsung Galaxy Tab 10.1 model P7500, the tablet does not start. It sends the initinal message "Samsung Galaxy tab 10.1" but it never statrts. It may drain the full battery without starting. I have tried even a factory reset but lt starts the process and never concludes the formatting /data step.
I just bought a Samsung Galaxy Tab 10.1 P7500 3G from eBay. This is a supposed to be a factory unlocked (OEM, unbranded) version. I don't see any branding anywhere. I am using a AT&T SIM in the USA and everything works fine.