SDIO_DATA_1 pin on the MB SOM connector is broken, so it cannot boot from SD card, and we try to use serial downloader way by Boot from USB OTG - i.MX8M , we've try thoes two methods mentioned in this link.
We built uuu and flash.bin(refer to attachment) smoothly, and lsusb also found the NXP Semiconductors device.
(Besides, We built flash.bin by make imx8mq_evk_defconfigm ,make flash.bin)
Unfortunately, after doing the last step: sudo ./uuu <flash.bin-dir>/flash.bin. It shows in terminal:
It shows training failed, and we also try the newest flash.bin version, but it still did not work.
could you please help us to solve this problem? many thanks.
Best,
Carrol
