Pre-conditions:
A) Check device is fully charged
B) Ensure device is purchased from authorized dealers in Hong Kong
C) Ensure device is connected to internet via mobile data or Wi-Fi network

IS YOUR DEVICE ABLE TO FULFILL A), B) and C)?
WARNING: All data in the device may be erased

1. Power on GT-I9103 and register Google account (Refer to Figure 1)

 
Figure 1  
Sign in or Create Samsung account
Go to Setting > Accounts and sync > Add account > Select Samsung(Refer to Figure 2)

Figure 2  
Go to “Settings > About device > Software update” (Refer to Figure 3)

In figure 3, there are 4 items – Update, Auto update, Wi-Fi only and Push messages

Update – When this item is selected, the device will connect to FOTA server to search for the latest software and conduct FOTA.
Auto update – When this item is checked, the device will periodically check for latest software. If new software is released, the device will prompt the user to update software.
Wi-Fi only – This item sets FOTA to run in Wi-Fi network. If it is unchecked, software will be upgraded through mobile data network.
Push messages – When new software is released, server will send notification to the device for upgrade request.

 
Figure 3  
Select “Update” > Notification of software update will be popped up.(Refer figure 4)
Select “OK” to check software status and download latest software via mobile network data if any
Select “Wi-Fi settings” to set up Wi-Fi connection to check software status and download latest software via Wi-Fi if any.
Select “Cancel” to cancel FOTA

 
Figure 4  
Select “Download” to download the software update patch (Figure 5 & 6)
Select “Later” to download the software update patch later and user can select reminder interval (Figure 7)

 
Figure 5 Figure 6 Figure 7
6. Select “Install” to install the software update patch on the device. The device is rebooted after completing installation (refer figure 8 & 9)
Select “Later” to install the software update patch on the device later and user can select reminder interval (refer figure 10)

 
Figure 8 Figure 9  
7. The device is rebooted after completing installation. New software version is shown finally (Refer to Figure 10).

 
Figure 10  

Caution
1. Samsung account and Google account login are required before proceeding FOTA.

2. If the device occurs abnormal behavior such as reset or auto restart during the process, please full reset the device via the following path:
Setting → Privacy → Factory data reset → select “Reset device”
(Remarks: All accounts, user data and settings will be erased from the device’s internal storage under Factory Data Reset.)

3. Please ensure the network is stable. If the device unable to find any update, please try again or upgrade software via KIES.