As part of the manufacturing design, an application called flash_app runs on processors on the two devices. This application allows you to program 5G acceleration solutions on the T1 card. An alternative method using the JTAG/USB cable and Xilinx tools is described in Programming the Devices Using JTAG.
The following sections describe how to set up the flash_app code to program the QSPI that is connected to the ZU19/Zynq UltraScale+ MPSoC or the ZU21/Zynq UltraScale+ RFSoC device.