I have a galaxy tab with following specs
Model number: GT-P7510
Android version: 3.1
Kernel version 2.6.36.3 se.infra@sep-58#1
Build number: HMj37.UEKF3 P7510UEKF3
I have tried
-- Settings > Privacy > Factory reset
-- Powered off the device -> Up Key + Power button -> Recovery mode > Factory reset
, but its not resetting the tab to factory settings, After restarting its always showing me already installed applications and gmail/facebook account.
fastboot -w
. Flashing a different ROM might solve it (see: Where can I find stock or custom ROMs for my Android device?). Can you ask your friend what modifications he might have applied? He's not playing games with you, is he? – Izzy Jun 03 '13 at 06:19