litex term gets stuck at the beginning

[phillippZZ]

Hi, guys.

When I try "litex_term /dev/ttyUSB3 --images=linux_2022_03_23/boot.json", everything simply gets stuck without any informtion printed. Could it be the physical connection to the board? Although I don't know exactly which port is connected to the board, I tried all the possible ports and all of them failed.
And the uploading of bitstream to xilinx_vcu118 via xsdb seems successful.

[phillippZZ]

So I tried to run litex_term first and then upload the bitstream. And I got the following information:

The above image is from screen with baud_rate=115200

This one is from litex_term.
It seems that the host machine is communicating with the board, but the uploading of image files are not successful.