Official firmware #23443 for GT-I9300 - SAMSUNGGalaxy S3

Download the latest firmware update for the Samsung Galaxy S3, but don’t forget to check whether the model number of your smartphone corresponds to the indicated one GT-I9300. The firmware code is COA from ROMANIA. The product comes with PDA version I9300XXUGNG3, CSC version I9300OXXGNG1, MODEM version I9300XXUGNA8. The operating system version of the given firmware is Android Jelly Bean 4.3. Full tutorial how to flash stock firmware on Samsung devices here

File name GT-I9300_COA_1_20140904075140_c8jicdifw1_fac
Firmware type 4 files
File size 942.89 MiB
Model Samsung GT-I9300
Operating system Android Jelly Bean 4.3
PDA/AP Version I9300XXUGNG3
CSC Version I9300OXXGNG1
MODEM/CP Version I9300XXUGNA8
Region
COA
Country
Romania
Description Cosmote
Hash 5c7e85db7cd9972cc43be3d6afc6de5a

2.Press to download

Instructions

Download to your PC: Odin 3 latest version.
Next extract the firmware file.
You should get 1 (if 1 file, choose it here) or 5 (if 5 file, choose it here) file:
- AP: "System & Recovery"
- CP: "Modem & Radio"
- CSC_***: "Country & Region & Operator"
- HOME_CSC_***: "Country & Region & Operator"
Add all files to Odin 3.
If you want to do a clean flash, use CSC_*** either use HOME_CSC_*** to keep your data and apps.
Now turn off your phone and enter the Download mode. How to do all methods:
- Press and hold the Power key , the Volume UP button and the Bixby key.
- Press and hold the Volume Up and Down keys and then connect a USB cable.
- Press and hold the Power key ,the Volume down button and the Home key.
- Connect a USB cable, then press and hold the Bixby button and the Volume down key.
- Press and hold the Power key and the Volume UP button.
Then connect your device to PC, Odin should detect your phone and COM port number will appear on the screen.
Please specify only the F.Reset time and Auto-Reboot.
Finally press the Start key. Your phone will now restart and disconnect from the PC.

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