These are the steps to root Samsung Galaxy Tab 2 10.1 GT-P5100 running on the Android 4.0.3 software update by using the CF-Auto-Root tool Chainfire makes and the Odin flashing tool.

REQUIREMENTS

• You must have the Samsung Galaxy Tab 2 10.1 with the model number GT-P5100 to use this guide or else you will likely end up bricking your device. Check what your Tab 2’s model number is by tapping on the Menu > Settings > About Device > Model Number.
• The rooting package made by Chainfire found in this guide is based on Android 4.0.3 Ice Cream Sandwich and IML74K.P5110XWALD2 firmware. You don’t need to flash the firmware that has the same build number on your Samsung Galaxy Tab 2 before you use this guide.
• You must have a computer that is running a Windows operating system to get this guide to work. The Odin flashing tool does not work unless your computer is running Windows; therefore you cannot expect the guide to work without Windows.

BEFORE WE BEGIN

• Download the Samsung USB Drivers for the Samsung Galaxy Tab 2 10.1 and install them on your Windows computer before you start the guide. You must be using the up to date drivers or else the devices and programs on the computer like the Odin flashing tool will struggle talking to one another.
• Unlock the Samsung Galaxy Tab 2’s hidden Developer Options menu by tapping on the Menu > Settings > About Device > Build Number 7 times.
• Enable the USB Debugging Mode by tapping on the Menu > Settings > Developer Options > USB Debugging Mode.

HOW TO ROOT SAMSUNG GALAXY TAB 2 10.1 GT-P5100 RUNNING ANDROID 4.0.3

1. Download the updated CF-Auto-Root package for the P5100 from this link.
2. Download the Odin flashing tool for the Tab 2 10.1 from this link.
3. Download both the files to the computer and shift them over to the desktop.
4. Extract the files on the desktop by right-clicking > extract there from the menu.
5. Double-click the Odin executable file and run the flashing tool on the computer.
6. Long-press the Power button for about 10 seconds on the Samsung Galaxy Tab 2 and wait until the device is off completely.
7. Reboot the Samsung Galaxy Tab 2 10.1 in download mode by using the hardware button combination.
8. Connect the Samsung Galaxy Tab 2 10.1 to the computer with the USB cable.
9. Click the PDA or AP button that is on the Odin user-interface and browse the desktop for the CF-Auto-Root-espresso10rf-espresso10rfxx-gtp5100.tar.md5.
10. Leave all of the default settings from the Odin flashing tool the same way there were when you first opened the program.
11. Click the Start button and wait until the Odin flashing tool flashes the Cf-Auto-Root exploit on your Samsung Galaxy Tab 2 tablet.
12. Wait until you get the pass message from the Odin user-interface and the Galaxy Tab 2 gives you a message letting you know that it is about to reboot in recovery mode.

Any Samsung Galaxy Tab 2 that does not reach recovery mode must find it manually with your help otherwise the rooting will not have worked. You can get your device in recovery mode by pressing the Volume Up + Home + Power buttons at the same time when booting it up.

New software updates can sometimes bring new bootloaders with it for the Samsung Galaxy Tab 2 tablet. When that happens, the devices can sometimes fail to boot after applying the CF-Auto-Root packages. You can report those problems to Chainfire personally by visiting his official XDA Developers thread that is made for the rooting tool.