LP-AM243: using USB DFU-util example

hello,

I would like to use USB DFU BOOT mode instead of UART BOOT mode SBL& application flashing (write all QSPI flash).

So I'm going to follow the AM243x MCU+ Getting Started Guide AM243x MCU+ SDK 09.01.00.

I'm currently stuck at the 'Command to flash SOC initialization binaries to EVM' step under the 'Preparing to flash the application' section.

The files I used (from mcu_plus_sdk_am243x_09_01_00_41\tools\boot\sbl_prebuild\am243x-lp):

default_dfu_ospi.cfg was written as follows:

# First point to sbl_uart_uniflash binary, which function's as a server to flash one or more files
--flash-writer=sbl_dfu_uniflash.release.hs_fs.tiimage

# Now send one or more files to flash or flashverify as needed. The order of sending files does not matter

# Program the OSPI PHY tuning attack vector
--operation=flash-phy-tuning-data

# When sending bootloader make sure to flash at offset 0x0. ROM expects bootloader at offset 0x0
--file=sbl_ospi.release.hs_fs.tiimage --operation=flash --flash-offset=0x0

# When sending application image, make sure to flash at offset 0x80000 (default) or to whatever offset your bootloader is configured for
--file=hello_world_am243x-lp_r5fss0-0_nortos_ti-arm-clang.appimage.hs_fs --operation=flash --flash-offset=0x80000

This is my stage now

There seems to be a problem using usb_dfu_uniflash.py.

when i use dfu-util directly, it's working.

 could you help what's wrong with me