Cant use kwboot to pretest (1 reply)

Hello ,

i am trying to convert my NSA325v2 to Debian system.
So in order to be sure i would like to test if the system can handle

uboot.2023.04-tld-1.nsa325.kwb

unfortunately if i use

sudo kwboot -t -B 115200 /dev/ttyUSB0 -b uboot.2023.04-tld-1.nsa325.kwb -p

xmodem stopps at 0%

kwboot version 2022.01+dfsg-2ubuntu2.5
Patching image boot signature to UART
Aligning image header to Xmodem block size
Sending boot message. Please reboot the target...\
Waiting 2s and flushing tty
Sending boot image header (512 bytes)...
  0 % [++++++++++
xmodem: Operation canceled

i am using the CH340G usb-serial conector.

does anyone have an idea what is the cause for such problem?