<PRO A/ Lite A firmware upgrade process>
a. Format the USB flash drive (USB 2.0, up to 32G) in the "FAT32" mode on the PC/Laptop/ Notebook.
b. Click the link below to download the update file and unzip it on the PC/Laptop. (It is recommended to use "WinRAR" to decompress)
c. Put "ISPBOOOT.BIN" into the root directory of the USB flash drive.
d. Plug the USB flash drive into the Type-A port of the head unit.
e. There is a small hole beside the Type-A port, this is the Reset hole. Poke it and hold it.
f. Plug in the power. After "Updating" appears on the screen, release Reset.
g. After the update process is complete, unplug the power supply and the USB flash drive. Wait for 2 ~ 5 seconds, then plug in the power and restart the head unit. Then you can use it now.