Step 1 - Update System Software
Copy the update_dj.zip file to a USB drive and plug it into Android Auto or Apple CarPlay. Then power on the device. It will update automatically.
After the update is complete, please follow the second step.
Step 2 - Update Feature Software
Unzip and copy the apd_8257_AA_6.75inch_SS1 and zxdzlog.png files to a USB drive and plug it into Android Auto or Apple CarPlay.
Then power on the device. It will update automatically.
