3914 FULL COLOR LEDSIGN DEMO PROGRAM
This article step how to copy DEMO program to u disk, then insert it to SIGN. You can check that the sign is working properly. Please follow the steps carefully, it may not work because of the wrong path.
For u disk requirement, please use 8G u disk item package included. Please use the well-known brands such as Toshiba, Kingston, Sandisk and so on. Some poor quality u disk may not be compatible with the sign.
Must Format u disk to FAT32！
Download file from above link.