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GT-I9300

(GALAXY S ?) DOWNLOAD FIRMWARE: I9300UBELL6

Firmware Details:
Model: GT-I9300 / GALAXY S ?
PDA/AP Version: I9300UBELL6
CSC Version: I9300TFGELL1
Bootloader/ BL: I9300UBELL6
Region: CRM / Costa Rica
Carrier/Brand: Movistar Costa Rica
OS: Android / Jelly Bean
OS Version: 4.1.2
Build Date: N/A
Security Patch Level: N/A
Changelist: 0
CRC: NULL
Size: N/A

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