Samsung has rolled out the latest Android 4.1.2 Jelly Bean update for Galaxy Pocket Neo with model number GT-S5310. The new official firmware is now available for download in Russia as an Over-The-Air (OTA) update as well as through Samsung KIES.
Firmware details
PDA: S5310XXAML1
CSC: S5310OXEAML1
MODEM: S5310XXAME1
Version: Android 4.2.2
Build date: Dec 11, 2013
Regions: Russia
Samsung Galaxy Pocket Neo S5310 users who missed the OTA update notification or unable to access the update over Samsung KIES, can now download and install the same manually using our step-by-step guide.
Pre-requisites
1. Install USB Drivers for Samsung Galaxy Pocket Neo on the computer.
2. Enable USB Debugging Mode on the phone by navigating to Settings >> Developer Options.
3. Make a backup of all your important data before following the guide.
4. The Galaxy Pocket Neo should be factory unlocked and not locked to any particular carrier.
5. Ensure the battery of the phone is charged more than 80 percent.
6. The Android 4.1.2 XXAML1 Jelly Bean firmware is compatible only with the Galaxy Pocket Neo (GT-S5310). Applying this to any incorrect variant might brick the device. Verify the model number of the Galaxy Pocket Neo by navigating to Settings >> About Phone.
Files Required
1. Android 4.1.2 XXAML1 Jelly Bean Firmware (Mirror Link) for Galaxy Pocket Neo S5310
2. odin 3.07Steps to Update Galaxy Pocket Neo S5310 with Android 4.1.2 XXAML1 Jelly Bean Firmware
Step 1: Extract Firmware zip file using WinRAR/7-Zip/WinZip or any other extracting tool, you will get a .tar.md5 file and some other files (optional).
Step 2: Extract Odin zip file and you will get Odin3 v3.07.exe along with few other files.
Step 3: Switch off the Galaxy Pocket Neo.
Step 4: 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 5: Run Odin on the computer as an Administrator.
Step 6: Connect the Galaxy Pocket Neo 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 7: Select the following files in Odin from extracted S5310XXAML1 firmware folder:

• Click the PDA button and select the .tar.md5 file.
• Click the Phone button and select file with MODEM in its name. Ignore if there is no such file.
• Click the CSC button and select file with CSC in its name. Ignore if there is no such file.
• Click the PIT button and select the .pit file. Ignore if there is no such file.

Step 8: In Odin, enable Auto Reboot and F. Reset Time checkboxes. Also, ensure the Re-Partition checkbox is chosen only if a .pit file was chosen in the previous step.
Step 9: Verify everything suggested in Step 7 and Step 8 is done correctly. Then hit the Start button to begin the installation process.
Step 10: Once the installation process is completed, your phone will restart and soon 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 your device from the computer.
Samsung Galaxy Pocket Neo S5310 should be now updated with Android 4.1.2 XXAML1 Jelly Bean official firmware. Head over to Settings >> About Phone to verify the software version running on the device.
Note: If Galaxy Pocket Neo S5310 stuck at booting animation after Step 10 then go to recovery mode (press and hold the Volume Up, Home and Power buttons together) and perform Wipe data/Factory Reset and Wipe Cache Partition task before selecting reboot system now function. In recovery mode use Volume keys to navigate between options and Power key to select the option. Please note, performing wiping task will erase your device internal memory data and not external SD card data.

Click here to know How to Root Galaxy Pocket Neo S5310 running on Android 4.1.2 Jelly Bean firmware.

Samsung Galaxy Pocket Neo S5310 users who wish to root and install ClockworkMod (CWM) recovery on their devices, may follow our step-by-step guide.
This tutorial uses CWM recovery released by XDA-Developers member, blearreaz0n. The CWM recovery allows Galaxy Pocket Neo users to root their devices without any difficulty.

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-Requisites
1. Install USB Drivers for Samsung Galaxy Pocket Neo on your computer.
2. Enable USB Debugging Mode on the phone by navigating to Settings >> Developer Options.
3. Make a backup of all your important data before following the guide.
4. The Galaxy Pocket Neo should be factory unlocked and not locked to any particular carrier.
5. Ensure the battery of the phone is charged more than 80 percent.
6. The CWM recovery works only on the Galaxy Pocket Neo (GT-S5310). Applying this on any incorrect variant might brick the device. Verify the model number of the Galaxy Pocket Neo by selecting Settings >> About Phone.
Files Required
1. CWM (Mirror Link)
2. Superuser (Mirror Link)
3. Odin 3.07
Steps to Install CWM Recovery on Galaxy Pocket Neo S5310
Step 1: Extract the Odin 3.07 .zip file 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 Pocket Neo. 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 Pocket Neo 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 CWM recovery .tar.md5 file. Verify that Re-Partition option is 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, your phone will restart and soon 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 Pocket Neo S5310 via CWM Recovery
Step 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 the installation process completes, return to main recovery menu and select "reboot system now".
Samsung Galaxy Pocket Neo S5310 running on Android 4.1.2 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 Pocket Neo S5310 with Android 4.1.2 XXAML1 Jelly Bean official firmware.

Samsung has released a new Android 4.1.2 Jelly Bean update for the Galaxy Pocket Neo (GT-S5310). The new official firmware is now available as an Over-The-Air (OTA) update as well as through Samsung KIES.
Firmware details
PDA: S5310DXANB2
CSC: S5310OLBANB2
MODEM: S5310DXAME2
Version: Android 4.1.2
Build date: Feb 26, 2014
Regions: Malaysia, Singapore, Thailand
Samsung Galaxy Pocket Neo S5310 users who missed the OTA update notification or unable to access the update over Samsung KIES, can now download and install the same manually using our step-by-step guide.
Pre-requisites
1. Install USB Drivers for Samsung Galaxy Pocket Neo on the computer.
2. Enable USB Debugging Mode on the phone by navigating to Settings >> Developer Options.
3. Make a backup of all your important data before following the guide.
4. Ensure the battery of the phone is charged more than 80 percent.
5. The Android 4.1.2 DXANB2 Jelly Bean firmware is compatible only with the Galaxy Pocket Neo (GT-S5310). Applying this to any incorrect variant might brick the device. Verify the model number of the Galaxy Pocket Neo by navigating to Settings >> About Phone.
Files Required
1. Android 4.1.2 DXANB2 Jelly Bean Firmware (Mirror Link) for Galaxy Pocket Neo S5310
2. Odin 3.07
Steps to Update Galaxy Pocket Neo S5310 with Android 4.1.2 DXANB2 Jelly Bean Firmware
Step 1: Extract Firmware zip file using WinRAR/7-Zip/WinZip or any other extracting tool, you will get a .tar.md5 file and some other files (optional).
Step 2: Extract Odin zip file and you will get Odin3 v3.07.exe along with few other files.
Step 3: Switch off the Galaxy Pocket Neo.
Step 4: 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 5: Run Odin on the computer as an Administrator.
Step 6: Connect the Galaxy Pocket Neo 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.
Step 7: Select the following files in Odin from extracted S5310DXANB2 firmware folder:

• Click the PDA button and select the .tar.md5 file.
• Click the Phone button and select file with MODEM in its name. Ignore if there is no such file.
• Click the CSC button and select file with CSC in its name. Ignore if there is no such file.
• Click the PIT button and select the .pit file. Ignore if there is no such file.

Step 8: In Odin, enable Auto Reboot and F. Reset Time checkboxes. Also, ensure the Re-Partition checkbox is chosen only if a .pit file was chosen in the previous step.
Step 9: Verify everything suggested in Step 7 and Step 8 is done correctly. Then hit the Start button to begin the installation process.
Step 10: Once the installation process is completed, your phone will restart and soon 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 your device from the computer.
Samsung Galaxy Pocket Neo S5310 should be now updated with Android 4.1.2 DXANB2 Jelly Bean official firmware. Head over to Settings >> About Phone to verify the software version running on the device.
Note: If Galaxy Pocket Neo S5310 stuck at booting animation after Step 10 then go to recovery mode (press and hold the Volume Up, Home and Power buttons together) and perform Wipe data/Factory Reset and Wipe Cache Partition task before selecting reboot system now function. In recovery mode use Volume keys to navigate between options and Power key to select the option. Please note, performing wiping task will erase your device internal memory data and not external SD card data.
Read also: How to Root Galaxy Pocket Neo S5310 on Android 4.1.2 Jelly Bean and Install CWM Recovery