Nanjing DoubleStar was one of the original controller manufacturers for LED Displays.
DBStar Firmware Types:
Sending Card: .rupi
Sending Card: .bin
Receiving Card: .bith
.scf – Screen Parameter for Sending card
.recv – Parameter for Receiving card
.led — sssparameter for sending card and receiving card.
.xmrs — screen parameter for sending and receiving.