You are lucky enough to have samsung galaxy s3 and you have rooted it or it has been bricked by you and now you want to repair it or unbrick it then you have reached the right place.Don't worry you will get your factory unlocked like samsung S3 I9300 back.So let us start:
Before You Start:
1. Install USB Drivers for Samsung Galaxy S3 on your computer.(Link given below)
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 device 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. Verify the model number of the Galaxy S3 I9300 by selecting Settings >> About Phone.
Necessary Downloads:
Official Stock Firmware for Galaxy S3 GT-I9300.: Download Here.
Samsung USB Drivers: Download Here.
Odin 3.07: Download Here.
Triangle Away App For S3 : Download Here.
Procedure To Unroot/Flash Official Rom/Firmware Samsung Galaxy S3 I9300:
1. First of all you need to install the Traingle Away app from above link.
Image Source:XDA Forums
Before You Start:
1. Install USB Drivers for Samsung Galaxy S3 on your computer.(Link given below)
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 device 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. Verify the model number of the Galaxy S3 I9300 by selecting Settings >> About Phone.
Necessary Downloads:
Official Stock Firmware for Galaxy S3 GT-I9300.: Download Here.
Samsung USB Drivers: Download Here.
Odin 3.07: Download Here.
Triangle Away App For S3 : Download Here.
Procedure To Unroot/Flash Official Rom/Firmware Samsung Galaxy S3 I9300:
1. First of all you need to install the Traingle Away app from above link.
2. Extract the downloaded files on your desktop.
3. After installing the Triangle Away app on your GS3, launch it and tap the reset flash counter option.
4. After then you device should be rebooted and you’ll have this warning message on your screen. Here you need to Press Volume Up key to reset counter and status on Galaxy S3.
5. Now Press and Hold the Volume Up+Home+Power buttons at the same time to Reboot your Galaxy S3 into Download Mode.
6. After then connect your Galaxy S3 to PC using the USB Cable and Launch Odin on your desktop. At this point make sure Odin recongnizes your device. The ID:COM will either turn blue or yellow and you’ll also see Added!! in the message section of odin.
7. Also note that only Auto Reboot and F. Reset Time should be checked and leave the rest.
8. After then hit the PDA Button in Odin and select the Firmware update file and then hit the START Button.
9. Now wait for Odin to flash the official Fimware file on your Galaxy S3. Once it gets completed, you’ll be notified via the PASS!! message in Odin and during this your device will reboot.
10. Finally now reboot your Galaxy S3 into Stock Recovery using the Volume Up+Home+Power buttons.
11. Now using the Volume Up/Down keys navigate to Wipe Data/Factory Reset and select it using the Power button. After then just confirm the operation by Yes Delete all user data.
12. At last select the Wipe Cache Partition and then Reboot System Now.
That's it, you have successfullu unrooted and flashed stock firmware on your samsung galaxy s3 I9300.
For any questions and suggestions leave a comment below.
Written by Unknown
Satyam Bora Is 18 Years Old Boy Addicted To Blogging And Technology.He Is A Part Time Blogger And Student Of Civil Engineering. This Guy Is Always Here To Help You :)
Nice post, thanks admin
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