Flashing SPI Flash from OMAP L138 E (secure) with UART Tool

Hello, we are using a custom board and the OMAP L138 E.

I build a little programm for flashing some LEDs and use the secure AISgen tool to get the right formatted .bin File for flashing to the SPI Flash. Which Tool is provided from TI to flash the file over the UART to the secure OMAP-L138 E?

I have tried to boot my file with GenericSecureUartHost.exe and this is working fine, but flashing with the sfh_OMAP-L138.exe is not possible I think, or is it?

Best regards

Thomas