Samsung Galaxy S3 is a multi-touch, slate-format smartphone running the Android operating system. It is designed, developed, and marketed by South Korean company, Samsung Electronics. It has additional software features, expanded hardware, and a redesigned physique from its predecessor, the Samsung Galaxy S II. The S III employs an intelligent personal assistant (S Voice), eye-tracking ability, increased storage, and a wireless charging option. Depending on country, the 4.8-inch (120 mm) smartphone comes with different processors and RAM capacity, and 4G LTE support. The device was launched with Android 4.0.4 "Ice Cream Sandwich", and can be updated to Android 4.1 "Jelly Bean". Disclaimer: All the custom ROMs and firmwares, official software updates, tools, mods or anything mentioned in the tutorial belong to their respective owners/developers. We (MyTrickSource) or the developers are not to be held responsible if you damage or brick your device. We don’t have you on gun point to try out this tutorial ;-)
Android 4.1.2I9300ZSEMC1 Firmware Details:
PDA: I9300ZSEMC1CSC: I9300OZSEMC1
Version: 4.1.2
Date: 2013 March
Regions: Taiwan
Samsung Galaxy S III USB Drivers
You will need to connect your Android phone with the computer. For that, please make sure you have installed the USB drivers for Samsung Galaxy S III properly. If not, you can download the latest official drivers from our Android USB Drivers section here:Download Samsung Galaxy S III USB drivers!
Backup and Other Important Tips
Done with the USB drivers? Perfect. The tutorial is on the next page, but first, please take a look at the following tips and important points you need to take care of. These are important, as we don’t want anyone losing their personal data or apps:Always backup your important data that you might need after you install a new custom ROM, an official software update or anything else. Make a backup for just in case, you never know when anything might go wrong. See below for some tips on how to backup data:
- Backup your Apps. How? –> How to Backup Android Apps.
- Backup your SMS messages. How? –> How to Backup/Restore SMS Messages.
- Backup Call History. How? –> How to Backup Call History.
- Backup APN Settings: GPRS, 3G, MMS Settings. How? Note down everything from: Settings > Wireless & Networks (More…) > Mobile networks > Access Point Names.
If you already have a custom recovery (ClockworkMod, TWRP etc.) installed on your phone, we strongly recommend a backup using that as it creates a complete image of your existing phone set up.
A few more optional tips that you should remember:
1. Having problems connecting your Android phone to the computer? You need to enable USB debugging mode.2. Make sure your Android device is charged up to 80-85% battery level. Why? Because, if your phone goes off suddenly while installing a custom ROM, flashing an official firmware update or installing mods etc. — your phone might get bricked or go dead permanently. No one wants that, right?
3. Most of the tutorials and how-to guides on MyTrickSource are for factory unlocked Android phones and tablets. We recommend NOT to try our guides if your phone is locked to a carrier, unless we have specified the carrier name or device model.
If you find the above tips useful and they were helpful to you, please consider giving us a +1 or LIKE to thank us!
All set and ready? Now, let’s proceed with the tutorial below and update Galaxy S III I9300 to I9300ZSEMC1 Android 4.1.2 Jelly Bean official firmware.
How to Update Galaxy S III I9300 to I9300ZSEMC1 Android 4.1.2 Jelly Bean
We have put together a detailed step-by-step instructions guide on how to update Samsung Galaxy S III I9300 to Android 4.1.2 I9300ZSEMC1 Jelly Bean. If you are used to installing official updates through ODIN on Samsung Galaxy devices, then this should not be any different for you.Please read every line carefully and make sure you read the tutorial once before actually performing it on your Android device.
To Remember:
- This tutorial is only for Samsung Galaxy S III I9300. Please don’t try this on any other variants of the phone.
- This is an unbranded firmware with no carrier apps installed on it.
- Make sure you backup all your data in your phone before proceeding.
Complete Step-By-Step Instructions:
Step 1 - Download Android 4.1.2 I9300I9300ZSEMC1 for Galaxy S III to your computer and extract the zip file.Step 2 - Download ODIN v1.85 which will help you to install Android 4.1.2 on Samsung Galaxy S III I9300.
Step 3 - Switch OFF your phone. Now go to Download Mode. How? Press and hold the Volume Down + Power buttons together, till you see the Samsung logo or the construction Android robot and a triangle. This is the Download Mode.
Step 4 - Make sure you have your Galaxy S III USB drivers installed on your computer.
Step 5 - Open ODIN on your computer. Connect Galaxy S III to your computer while the phone is in the Download Mode.
Step 6 - If your phone is connected successfully, one of the ID:COM boxes will turn yellow with the COM port number. This step might take some time.
Step 7 - Now select the files that you have to flash/install on your phone. These files are to be found from the extracted files in Step 1.
- Click on ‘PDA’ and select file with ‘CODE’ in its name.
- Click on ‘Phone’ and select file with ‘MODEM’ in its name. Ignore this step if there is no such file.
- Click on ‘CSC’ and select file with CSC’ in its name. Ignore this step if there is no such file.
- Click on ‘PIT’ and select the .pit file. Ignore this step if there is no such file.
Step 9 - Now click on the Start button in ODIN. Installation process will start and would take a few minutes to complete.
Step 10 - After the installation is completed, your phone will restart. After you see the home screen, unplug your phone from the computer.
That’s it. Your Samsung Galaxy S III has now been updated to I9300ZSEMC1 Android 4.1.2 firmware. Go to Settings > About phone to verify.
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If you run into any problems, feel free to drop us a comment below and we will reply you back ASAP with the fix or the solution to your problem.
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