Firmware upgrade

EC-A1684JD4 FD uses TF card to upgrade firmware, users need to
strictly follow the steps below.

Preparation

EC-A1684JD4 FD

PC

USB card reader

TF card, Class10 or higher is recommended, and choose 8/16/32 GB
capacity according to the firmware size

Firmware to be upgraded

Upgrade steps

(1) The TF card needs to use MBR partition and format it into FAT32
format;

(2) Decompress all the files in the firmware to be upgraded (zip
compression format) to the TF card;

(3) Insert the TF card into the TF card slot of EC-A1684JD4 FD, and
then turn on the power;

(4) During the upgrade process, the LED light will flash briefly,
indicating that the upgrade is in progress;

(5) If the upgrade is successful, the green LED light will keep
flashing;

(6) If the upgrade fails, all LED lights will be off.

Precautions:

If the TF card exceeds 32GB, it may not be formatted into FAT32 format
due to the limitations of the Windows system, so it is best to choose
a TF card with a size below 32GB

The upgrade time is a bit long, about six minutes, please be patient