Model: SM-G900H
Model name: GALAXY S5
Country: Vietnam
Version: Android 4.4.2
Changelist: 1186981
Build date: Mon, 31 Mar 2014 09:35:10 +0000
Product Code: XXV
PDA: G900HXXU1ANCJ
CSC: G900HOLB1ANCH
MODEM: G900HXXU1ANCI
link here
Instructions
Extract (unzip) the firmware file
Download Odin v3.09
Extract Odin zip-file
Open Odin v3.09
Reboot phone in Download Mode (press and hold Home + Power + Volume Down buttons)
Connect phone and wait until you get a blue sign in Odin
Add the firmware file to AP / PDA
Make sure re-partition is NOT ticked
Click the start button, sit back and wait a few minutes