According to DM368 SoC technical document (SPRUFG5A), DM368 SoC supports booting from NAND, MMC/SD, UART, USB, SPI, EMAC and HPI (Host Processor Interface). By the time of writing this tutorial, it seems that TI only officially supports booting from NAND device, MMC/SD card and UART port in their DM368 DVSDK release. In our case, we don't have NAND memory on board and nor do we support wired Ethernet connection (we do support WiFi over USB or SDIO interface). The SD card is only used for storing user data and it can not be used as a boot device as the product doesn't ship with a card! We don't want to UART or USB port for booting since it is really not practical for a product in the field. SPI booting seems ideal to us and the only way for us to boot DM368 SoC. Once the boot mode is identified, the next question comes in: "how do I flash the SPI (or NAND if you have one board) memory device?". We could use MMC/SD card to boot and then program a memory device and actually it is the "de-facto" way most people use nowadays. We landed at using the USB boot as it is more mass production friendly and speedier. Luckily we were able to get the USB boot working with the help from TI[a] . As a result, we wrote an app to boot DM368 SoC via USB and flash the memory devices. When booting from SPI device, DM368 SoC will look for a UBL stored in the SPI device attached to SPI0 interface. We have created the SPI UBL binary for you to download. We will show you the download links while you read through this tutorial or you can simply jump to the Downloads section if you can't wait.