Samsung Galaxy A3 SM-A300H Firmware Download
How to Update Samsung Galaxy A3 SM-A300H LOLIPOP manually
1) First, enable USB debugging from the establishment.
2) Download official Android 5.1.1 for the Galaxy A3 SM-A300H top and unzip it.
3) Download the latest version of Odin from above and unzip the zip file.
4) Run the file on your PC Odin3 v3.07 .exe.
5) Now boot your Galaxy A3 SM-A300H download mode by press and holding the (Power + Home + Vol Down) buttons.
6) Once you enter download mode, is an ID: COM port turned blue and message added in Odin3 v3.07 .exe message box means that the device has been recognized by Odin.
7) If ID: COM does not appear, the driver is not installed correctly or try different USB cable.
7) Now locate and add the firmware file ‘tar’ (downloaded from above) to the tab / AP PDA in Odin.
8) Ensure that only these two options “Auto Reboot” and “Time F.Reset” is tick. (Make sure you re-partition is not marked)
9) Now click the “Start” button and start flashing the file. Waiting until ‘Pass’ appears in green on the Odin screen.