[Tutorial] How To Upgrade Samsung Galaxy S3 (GT-I9305) to Android 4.1.2 Jelly Bean

The users of Samsung Galaxy S3 LTE (GT-I9305) can update their devices to the latest Android 4.1.2 Jelly Bean via over the air (OTA) or through official tool KIES utility.

In case the Android 4.1.2 Jelly Bean update is available for your Galaxy S3 LTE but you are facing difficulties in updating the firmware through officially recommended process, you can try out a manual updating method explained below.

Official Firmware Details:
Android Version: 4.1.2 – Build JZO54K
Build Date: 12-12-12
Change list: 633241


Things to keep in mind before upgrading using the manual method:

  • You must have a proper backup of your data
  • Ensure that your Samsung Galaxy S3 is fully charged
  • You must have the USB drivers for your device installed on your computer
  • USB Debugging must be enabled
  • After flashing the firmware, you will lose custom ROMs such as CM10, Paranoid Android or AOKP installed in your device
  • You will also lose custom recovery such as ClockworkMod Recovery or TWRP Recovery if you have any
  • After installing it on your Galaxy S3, you will lose root if you have any
  • This tutorial uses Odin that only works on Windows. For other platforms like Linux and Mac OS, the users have to use cross platform tool Heimdall to flash this firmware.

Note – This tutorial is only for Samsung Galaxy S3, model number GT-I9305. Proceed at you own risk, TechZune will not be responsible for anything that goes wrong.

Steps To Upgrade Samsung Galaxy S3 to Android 4.1.2 Jelly Bean:

Step 1: Download Android 4.1.2 Jelly Bean (I9305XXBLL3) for Samsung Galaxy S3 (GT-I9305) and extract the file.

Step 2: Download Odin 3.07 and extract the file.

Step 3: Power off your phone and wait for vibration to confirm complete switch off.

Step 4: Put the Samsung Galaxy S3 I9305 in Download Mode by pressing and holding the Volume Down and Home buttons while pressing the Power button until the Samsung Galaxy logo appears on the screen. After some time, your phone will be in the download mode.

Step 5: Run Odin3 v3.07.exe as an Administrator.

Step 6: Connect the Galaxy S3 I9305 with your PC via USB.

You will get a message saying “Added” under the Odin’s message box. In addition, if the device is connected properly, you will see the COM port with a number in Yellow.

Step 7: Select the following files in Odin at relevant tabs from extracted I9305XXBLL3 firmware folder:

  • Click the PDA Button and select the .tar file here with *code* appearing in its name
  • Click the Phone Button and select file with *modem* in its name (leave if there is no such file)
  • Click the CSC Button and select file with *csc* in its name (leave if there is no such file)
  • Click the PIT Button and select the .pit file. Use this file only if you get it while extracting in step 1 or else just ignore it.

Step 8: In Odin window, make sure that Auto Reboot and F. Reset Time checkboxes are selected. In addition, if you are using a .pit file, ensure that Re-Partition checkbox is selected. Otherwise, it should NOT be ticked.

Step 9: Click on the START button to begin the flashing process.

Step 10: Once flashing is done, you will see a PASS message with green background in the left-most box at the top of the Odin.

The phone will then automatically reboot and you will see the Samsung logo after sometime. After that, you can unplug the USB cable to disconnect your device from the computer.

Android 4.1.2 Jelly Bean Official Update Available For Samsung Galaxy S3 LTE (GT-I9305)

Samsung had started to push Android 4.1.2 Jelly Bean update to the Galaxy S3 LTE (GT-I9305). The Galaxy S3 is Samsung’s flagship device of the year and is also it’s biggest worldwide selling device. Samsung has given the Galaxy S3 top priority in Software Updates that’s why Samsung keeps on updating this device to the latest versions of Android.


The users of Samsung Galaxy S3 LTE can update their devices to the latest Android 4.1.2 Jelly Bean via over the air (OTA) or through official tool KIES utility.

Official Firmware Details:
Android Version: 4.1.2 – Build JZO54K
Build Date: 12-12-12
Change list: 633241

Samsung has added a ton of new features in Android 4.1.2 update for the Galaxy S3 LTE, most of the features are brought from the Galaxy Note II. We have listed some of the enhancements in the new Android 4.1.2 update below.

Enhanced features in the new update:

  • Android 4.1.2 – JZO54K
  • Multi-View (Multi-Windows Multitasking, same as in Note II)
  • Page Buddy
  • New Gallery App (Same as in Note II)
  • Notification Panel (Notification Panel can now be customized)
  • Brightness Slider in Notification Panel Can Now Be Disabled
  • Smart Rotation (Screen Display adjusts to your angle of sightings)
  • Continues Input in Samsung Keyboard (Like Swipe or Android 4.2 Keyboard)
  • Paper Artist App
  • Group Cast App

Best latest Windows 8 Phone – which should you buy?

When it comes to Windows Phone there’s a new player in the starting line up in the form of Windows Phone 8 – Microsoft’s latest attempt to make a significant dent in the mobile market.

That’s exactly what Windows Phone 8 offers with a completely new way of providing you with your smartphone fill. Below is a list of Best latest Windows 8 Phone :

1. Nokia Lumia 920

Nokia Lumia 920 is the best Windows Phone, it is solidly built of a poly-carbonate uni-body shell that goes all around the device. Nokia Lumia 920 has one of the most impressive displays yet.With a 768 x 1280 pixel resolution spread across the 4.5-inch display and 332ppi, the screen is crisp at all times and easily legible with colors that really pop.

Nokia Lumia 920

Nokia has included what it terms a Pure Motion HD+ display and coupled it with its ClearBlack technology to make it more appealing to your eyes. Being an IPS LCD panel also ensures that your visual experience is as good as possible.

The display is also sheltered by Corning Gorilla Glass 2. Nokia Lumia 920 offers best in class viewing experience, indoors as well as outdoors. Lumia 920 has famous PureView camera (8 megapixel) with Carl Zeiss optics with dual LEDs for the flash. There is also a 1.3MP front facing camera placed right next to the earpiece.

Lumia 920 runs on a 1.5GHz dual-core Qualcomm Snapdragon S4 processor that’s more than capable of pushing the software along at a breakneck pace with 1GB of RAM for support. Lumia 920 has Bluetooth 4.0, NFC, 4G LTE connectivity, and your standard headphone jack. Lumia 920 is a great piece of hardware, and one of the best Windows Phone 8 devices you can buy.

2. Nokia Lumia 820

Nokia Lumia 820 is a mid-range smartphone and comes with brightly coloured interchangeable shells. The Lumia 820 looks solid and the idea of interchangeable shells will certainly appeal to people who are looking for a funky or colourful looking smartphone. The Nokia Lumia 820 sports a 4.3-inch AMOLED screen with ClearBlack technology. It has pixel dimensions of 800×480 translating to a pixel density of 217 ppi. The viewing angles of the Nokia Lumia 820 are good and so is the under sun visibility, all thanks to the ClearBlack technology. It has a reflective display. The Lumia 820 doesn’t have Gorilla Glass protection but we did not really miss it much on this smartphone. The phone comes with 8 megapixel camera, the pictures clicked from this smartphone are crisp and sharp. The dedicated camera button makes it easy to click pictures and one can use touch gestures to zoom-in or out of the frame.

Nokia Lumia 820
Nokia Lumia 820 comes with a 1.5 GHz dual-core Snapdragon S4 processor accompanied by 1GB RAM, which is adequate to make this smartphone zippy and responsive. We did not experience any lags while multi-tasking on this smartphone. The smartphone comes with 8GB of internal storage of which 5.1GB is available to the user. One can also add up to 64GB of memory through a microSD card. The call quality of the smartphone through loudspeaker and the headset is great. Even music playback on this smartphone is pretty good. The in-ear headphones that come with this smartphone are soft and comfortable to wear for longer durations. The Lumia 820 comes with a 1,650mAh battery and it easily lasts a day and half with moderate usage without using any power-saving techniques.

3. HTC 8X

The HTC 8X features one of the best smartphone designs we’ve come across in a long time. The blend of rubberized polycarbonate and glass gives the phone a premium look and feel and the bright, vivid colour options beg a second look. The 4.3” Super LCD 2 touch screen has a 1280×720 resolution, and produces accurate colors. The brightness is also very good and should be sufficient in most situations. The volume rocker and power button sit flush with the side panel which gives the phone a very clean look. The phone comes with Beats Audio technology and a couple of amplifiers to enhance your tunes through the internal speaker as well as the headphone jack. The speaker of the HTC 8X is located at the lower-back of the handset. This is a common placement that is often used in phone designs.

The phone curves towards the edges making it comfortable to hold. The Qualcomm Snapdragon S4 SoC is backed up by 1GB of RAM. The phone is packed with 16GB of internal storage, pretty standard for flagship smartphones these days but there’s no way of adding in more space with MicroSD cards. A 1800mAh power cell means the HTC 8X is up to the task of lasting a full day before needing a charge. The 8-megapixel camera is in line, offering 1080p video recording and excellent image capture. Around the sides of the HTC 8S is arrayed a camera button, volume rocker, and on/off switch. Also on the top is a 3.5mm jack audio output.

4. HTC 8S

The HTC 8S is a solid handset. It’s got an attractive and distinctive style. HTC 8S comes in an understated two-tone chassis with a rubberised polycarbonate finish. At 10.3mm thick it is far from the thinnest smartphone around. It’s small and light standing just 120mm tall and weighting in at a feather light 113g, but more importantly it looks quite different to most other smart phones on the market thanks to the bold range of colours it’s available in. It’s also surprisingly slick and fast for a mid range phone.

HTC 8S benefits from a 4 inch Super LCD Gorilla Glass display. It’s resolution of 480×800 pixels means 233 pixels per inch pixel density. It’s perfectly usable and looks bright and cheery. Around the back of the HTC 8S is a smooth and rubbery-feeling black panel. At the top is the camera lens and LED flash. Further down is a black HTC logo and a small Beats icon.

5. Nokia Lumia 620

Nokia Lumia 620 could become an attractive option at the budget end of the market. Nokia Lumia 620 has a nice 3.8-inch display with a 800×480 pixel resolution (WVGA). Above the screen there’s the earpiece in the centre, the front-facing 0.3 megapixel camera to the left of it and the Nokia logo to the right. Below the screen there’s a slightly larger space with soft touch buttons for ‘Start’, ‘Back’ and ‘Search’.

Nokia Lumia 620
The back of the Nokia Lumia 620 is fairly plain. The bulk of it is just a mass of bright colour from whatever back you’ve got on it, but there are a few features. Towards the top there’s the main 5 megapixel camera, capable of shooting 720p video. In the centre there’s another small Nokia logo, and at the bottom-right there’s a loud speaker. On the top edge you’ll find a microphone on the left and a 3.5mm headphone port on the right.
The bottom edge has a micro USB port in the centre for charging the phone or connecting it to a computer, while just to the right of that there’s another microphone. There’s also a microSD card slot under the back cover. It supports cards of up to 64GB and is all but essential given that there’s just 8GB of onboard storage.

6. Samsung Ativ S

Samsung Ativ S is a very good Windows Phone 8 device, offering several things: a slim build, large screen, removable battery and microSD support. Thanks to an excellent build, good specs, beefy storage and an open body design, Ativ S is an excellent option.

samsung ATIV S
It’s the thinnest build of any Windows Phone 8 device and it has the largest screen. This alone makes it deserving of attention from consumers. Ativ S’s slim body and metallic design give it a mature, subdued appearance that we find appealing. It has 1.5 GHz dual-core processor, 1GB of RAM, and the option of 16 or 32GB of internal memory. On the rear you’ll also spy an 8-megapixel lense and LED flash. There’s also the long, thin speaker grill we often see on Samsung phones. The top right side of the Ativ S has the lock/power button used for waking the phone and turning it off. On the bottom right lies a dedicated camera button.