Samsung Galaxy Star Pro with model number GT-S7262 has already received the 
Android 4.1.2 XXUAMK5 Jelly Bean update. The new official firmware is now available as an Over-The-Air (OTA) update as well as through Samsung KIES.

Samsung Galaxy Star Pro S7262 users who have already installed their  devices with Android 4.1.2 Jelly Bean, may root their  devices using the tutorial below.
Disclaimer: 
Rooting voids the warranty of your device. We and the  developer of this rooting procedures shall not be held responsible if  any undesirable outcomes may happen to your device. use of this root  guide is solely at your own risk!Pre-Requisites1. Install 
USB Drivers for Samsung Galaxy Star Pro on your computer. 
2. Enable USB Debugging Mode on the device by navigating to Settings >> Developer Options.
3. Make a backup of all your important data before following the guide.
4. The Galaxy Star Pro should be factory unlocked and not locked to any particular carrier.
5. Ensure the battery of the device is charged more than 80 percent.
6. The ClockworkMod Recovery (CWM) file works only on the Samsung Galaxy  Star Pro (GT-S7262). Applying these on any incorrect variant might  brick the device. Verify the model number of the Galaxy Star Pro by  selecting Settings >> About Phone.
Files Required1.
 CWM (Mirror 
Link)
2. 
Superuser (Mirror 
Link) or 
SuperSU3. 
Odin 3.07 (Mirror 
Link)
Steps to Install CWM Recovery on Samsung Galaxy Star Pro S7262Step 1: Extract the 
CWM Recovery and 
Odin 3.07 files using 
WinRAR/7-Zip/WinZip or any other extracting tool.
Step 2: Copy the 
Superuser .zip file to the SD card of your phone.
Step 3: Switch off the Galaxy Star Pro. Then boot the device 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 enter Download Mode.
Step 4: Run Odin on the computer as an Administrator.
Step 5: Connect the Galaxy Star Pro to the computer using USB  cable while it is in the Download Mode. Wait until Odin detects the  device. When the device is connected successfully, the ID: COM box will  turn to light blue with the COM port number. Additionally, the  successful connected will be indicated by a message saying Added.
Note: 
If the Added message does not appear, then try re-install USB drivers or changing the port on the computer.
Step 6: In Odin, click the 
PDA button and select the 
recovery.tar.md5 file. Verify that 
Auto Reboot and 
Re-Partition options are NOT selected.
Step 7: Double-check and click 
Start button in Odin. The installation process will now begin.
Step 8: Once the installation process completes, you will see a 
PASS message with green background in the left-most box at the very top of  the Odin. You can now unplug the USB cable to disconnect it from the  computer.
Steps to Root Galaxy Star Pro S7262 by Installing SuperSU via CWM RecoveryStep 9: Reboot the device into CWM Recovery by pressing and holding 
Volume Up,
 Home and 
Power buttons together.
Step 10: In CWM Recovery, select "install zip from sdcard" and then select "choose zip from sdcard". Now, navigate to the 
Superuser .zip file that you copied earlier and confirm the installation by selecting Yes.
Step 11: Once installation process is completed, return to main recovery menu and select "reboot system now".
Samsung Galaxy Star Pro S7262 running on Android 4.2.2 Jelly Bean is now  rooted successfully. You can now install any app that requires root  permission. Verify the root status of the device by downloading Root  Checker app from Google Play Store.
Thank's to all fellas at XDA who first tried out this rooting technique.  This root method was originally posted via XDA-Developers 
original thread.
Click here to know How to Update 
Galaxy Star Pro S7262 with Android 4.1.2 XXUAMK5 Jelly Bean official firmware.