[NX501A] Instructions for Bluetooth software update
1.1.Please prepare an empty micro SD card, of which capacity is more than 128 Mbyte.
(You cannot use the 4G Micro SD card that came with the NX501A. If you do, it will void your warranty and you will need to purchase a replacement card.)
1.2.Please download "Latest-BT-Update(3.70.1).zip" file to your PC. A folder named "SW_Update" will be created.
1.3.Please extract the file and copy "SW_Update" folder into the micro SD card.
2.1.Please turn off the NX501A power with a long press of the volume button.
2.2.Please insert the micro SD card into your NX501A.
2.3.Please press the volume button, so you can see the screen below.
2.4.Please press "PRESS HERE TO UPDATE" portion.
3.1.Please press the MENU button.
3.3.Please press "＞" button at the bottom of the left side of the screen.