Samsung Galaxy Tab 8.9 hard reset
With the Samsung Galaxy TAB turned off, press and hold the VOLUME UP button, and then briefly press the POWER .
Select Factory reset with volume button in the recovery menu.
Reset Galaxy Tab P7500, p7510
Note: If you see "Downloading" on the screen with an Android shoveling you pressed the wrong Volume key. Remove and reinsert the battery and try again.
Factory data reset
Use Factory data reset to return your device to its factory defaults. This setting erases all data from the device, including
Google or other email account settings, system and application data and settings, and downloaded applications. It will not erase
current system software and bundled applications, or files stored on an installed memory card, such as music or photos.
1. From a Home screen, press the Menu Key ➔ Settings ➔ Privacy.
2. Touch Factory data reset, then follow the prompts to perform the reset.
Use this method to hard reset your Samsung Galaxy Tab 8.9: Enter *2767*3855#. Warning! All your data including contacts, messages etc. will be lost! Copy all your necessary data/Contacts/Messages etc. to SIM or make backup to your PC before full reset! Take out SIM card before full reset.