EM7455 does not show up or have COM port when used in PC

[jyijyi]

See if this is same issue as yours.

MC7455 stuck in MBIM-only USB composition

This is weird. The request you send is fine, as proven by the MC7304 succcess. I do not understand why you get that error with the MC7455. To be absolutely sure that I didn’t miss anything, I switched my MC7455 to MBIM mode and tried the exact same command. Down to actually copying your requests and writing it directly to /dev/cdc-wdm0, after doing an MBIM open and allocating the same DMS CID. perl -e 'print pack("C*", map { hex } @ARGV)' 03 00 00 00 3d 00 00 00 08 00 00 00 01 00 00 00 …