To prepare a USB software download and update for the TP.RD8503.PB816
specifically offers a download link for the PB816 software in its description. Tech Forums : Sites like Kotit-Tech often host firmware archives for different panel types. 3. How to Update via USB Updating this board is straightforward but carries risks. Using the wrong firmware can permanently "brick" the board. Prepare the USB : Format a USB drive (8GB or less is best) to Copy the File : Place the software file (usually named allupgrade_8503_xxxx.bin tprd8503pb816 usb software download top
If you were looking for a download because the laser is not working: To prepare a USB software download and update for the TP