Samsung Galaxy Tab 3 8.0
The Galaxy Tab 3 8.0 runs on Android 4.4 Jelly Bean.

Samsung Galaxy Tab 3 8.0 users can now root their devices running Android 4.2.2 Jelly Bean. Additionally, users can install custom recoveries such as CWM or TWRP, which are shared by senior XDA member, emwno.

Galaxy Tab 3 users who wish to root their tablets and install custom recovery may follow our step-by-step guide. This method is compatible with all three variants of the Galaxy Tab 3 8.0: SM-T310 (Wi-Fi), SM-T311 (3G) and SM-T315 (LTE).

IBTimes UK reminds its readers that it will not be held liable for any mishap. Users area also advised to verify that their devices meet following requirements.   

Pre-requisites

1) Install USB Driver for Samsung Galaxy Tab 3 8.0 to transfer files between the Android device and the computer.

2) Enable USB Debugging Mode on phone to connect it with computer and use Android SDK with it. [Head over to Settings>> Applications. From there navigate and click on Development option then check USB Debugging Mode.]  

3) As the tutorial might wipe out all data of the phone, create a backup. If the device is having any custom recoveries such as ClockworkMod/TWRP already installed, backup data using the recovery.

4) If the Android phone powers off due to lack of battery while the installation process, it could damage the device. Therefore, the Galaxy Tab should have charge above 80% battery charge. 

5) The tablet should be factory unlocked and not locked to any particular carrier.

6) The device will lose manufacturer's warranty once it is rooted. However, users can reclaim the warranty back by unrooting the handset later.

7) The recovery files and root file work only on Samsung Galaxy Tab 3 8.0 SM-T310, SM-T311 and SM-T315. As applying these on any incorrect variant might brick the device, verify the model number of Galaxy Tab 3 by navigating to Settings>> About tablet>> Model number

Files required to download

CWM or TWRP Recovery

Root package [File name: ROOT_SGT3_8.0.zip]

Odin 3.07

Steps to install CWM/TWRP recovery on Samsung Galaxy Tab 3 8.0

Step-1: Extract the Odin zip using winrar/7zip/winzip or any other extracting tool

Step-2: Copy the ROOT_SGT3_8.0.zip to the SD card of the tablet

Step-3: Switch off the Galaxy Tab 3 8.0. Boot the tablet into Download Mode by pressing and holding Volume Down, Home and Power buttons together until a construction Android robot icon with a warning triangle appears on screen. Now press the Volume Up button to continue to enter Download Mode

Step-4: Run Odin as Administrator

Step-5: Connect the tablet to computer using USB cable while it is in the Download Mode. Wait until Odin detects the device. When the tablet is connected, the ID: COM box in Odin will turn blue with COM port number. Additionally, the successful connection will be indicated by an Added message

Note: If the Added message does not come then try another USB port, try the one located at the back side of the computer. If that does not work too then re-install USB drivers. 

Step-6: In Odin, click the PDA button and select the CWM/TWRP.tar file. Verify that Auto Reboot and F.Reset Time checkboxes are not selected in Odin  

Step-7: Click the Start button in Odin to begin the installation.

Step-8: When the installation process is completed, the tablet will restart and soon a PASS message with green background will appear in the extreme left box at the top of the Odin. Now unplug the USB cable from the tablet  

Steps to root Samsung Galaxy Tab 3 8.0

Step-9: Reboot the tablet into CWM recovery by pressing and holding Volume Up, Home and Power buttons together

Step-10: In CWM recovery, select install zip from sdcard then select choose zip from sdcard. Now navigate to ROOT_SGT3_8.0.zip that was earlier copied to the SD card of the tablet. Select the root file and confirm installation by selecting Yes  

Step-11: When the installation process is completed, go back to the main recovery menu and reboot the tablet by selecting reboot system now

Samsung Galaxy Tab 3 8.0 should now be successfully rooted on Android 4.2.2 with CWM/TWRP recovery mode installed. You may now install any app that requires root permission. Also verify the root status of the device by downloading Root Checker app from Play Store.  

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[Source: Honai of ndroid]