Download Samsung Galaxy A3 SM-A300M Stock Firmware

Flash/unbrick or upgrade your device with the firmwares below using odin

Learn how to use odin from here

Samsung Galaxy A3 SM-A300M Stock Firmware

Brazil
A300MUBU1AOC1_ZTO1AOC1 - Android 4.4.4 KitKat
A300MUBU1BOK1_ZTO1BOK1 - Android 5.0.1 Lollipop

Argentina
A300MUBU1AOE1_ANC1AOE1- Android 4.4.4 KitKat
A300MUBU1BPB1_UUB1BPB1_ARO - Android 5.0.1 Lollipop

To flash or upgrade your Galaxy SM-A300M with any of this firmware,

- Download and install samsung drivers

- Download and launch odin

- Turn off your phone

- Boot phone into download mode by holding vol down + home + power button

- When you see the yellow triangle, press volume up to continue into odin mode

- Now connect the phone to PC using USB cord

- Wait for odin to detect the phone (you will see the COM Port)

- Now click AP in odin interface then select the firmware

- After the firmware is successfully loaded,

- Click Start button

- Wait for process to complete

- When you see PASS in green then the process is complete.

- Wait for the device to reboot

Its always good to do a factory reset after doing this process

For a more detail process on how to flash or upgrade Samsung devices, click here

For other Samsung firmwares, click here