Can U2C module not connecting to SB2240

Hi, I have followed the manual for the SB2240, but when I try to flash the SB2240 via Can I get flash error

ERROR:root:Flash Error
Traceback (most recent call last):
File "/home/biqu/CanBoot/scripts/flash_can.py", line 493, in run_query
self.cansock.bind((intf,))
OSError: [Errno 19] No such device

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/biqu/CanBoot/scripts/flash_can.py", line 621, in main
loop.run_until_complete(sock.run_query(intf))
File "/usr/lib/python3.9/asyncio/base_events.py", line 642, in run_until_complete
return future.result()
File "/home/biqu/CanBoot/scripts/flash_can.py", line 495, in run_query
raise FlashCanError("Unable to bind socket to can0")
FlashCanError: Unable to bind socket to can0

Please advise to fix.

Start with scripts/flash_can.py around run_query at lines 493-495, where binding to can0 fails with "No such device". Check how the SB2240 and U2C are expected to expose can0, then reproduce the flash command from the manual. Done means the interface binds successfully and the SB2240 flash completes.

Written by the indexing model from the issue text.