Official firmware #3421 for GT-I9508 - SAMSUNGGalaxy S4 Duos

Download the latest firmware update for the Samsung Galaxy S4 Duos, but don’t forget to check whether the model number of your smartphone corresponds to the indicated one GT-I9508. The firmware code is CHM from CHINA. The product comes with PDA version I9508ZMSJQB1, CSC version I9508CHMJQB1, MODEM version I9508ZMSJQB1. The operating system version of the given firmware is Android Lollipop 5.0.1. Full tutorial how to flash stock firmware on Samsung devices here

File name GT-I9508_10_20170214133113_wc42dr24m8
Firmware type 4 files
File size 1.33 GiB
Model Samsung GT-I9508
Operating system Android Lollipop 5.0.1
PDA/AP Version I9508ZMSJQB1
CSC Version I9508CHMJQB1
MODEM/CP Version I9508ZMSJQB1
Region
CHM
Country
China
Description Unknown
Hash dce9a625120dfe32edefafc69df581fc

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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