For using a CP600 with a Panel Builder 600 version lower than V4.5.0, a BSP downgrade to BSP V1.0.x must be done. We recommend using an USB stick with the dedicated auto-update file which you can download below. Download the file, unzip it on an USB stick and copy the files to the root folder of the USB stick. Plug the USB stick in the CP600 and the downgrade will start automatically. The USB stick must have FAT or FAT32 format.