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GT-I9300

(GALAXY S ?) DOWNLOAD FIRMWARE: I9300XXUGND5

Firmware Details:
Model: GT-I9300 / GALAXY S ?
PDA/AP Version: I9300XXUGND5
CSC Version: I9300OPTGNE1
Bootloader/ BL: I9300XXUGND5
Region: OPT / Portugal
Carrier/Brand: Optimus Portugal
OS: Android
OS Version: 4.3
Build Date: 30/04/2014
Security Patch Level: N/A
Changelist: 2429075
CRC: 3386480742
Size: 904.97 MB

This firmware also works for:

You will download the app that will download the latest version of the firmware. Why should you use this app instead of download directly?

How to flash your phone with the new firmware?  How to update SAMSUNG device? How to change firmware in your device?

Click here to read the article about installing downloaded software