Setting USB comp on EM9191

Hi,

On an EM9191, the USB comp was originally set to 1,4,00001009

at!usbcomp?
Config Index: 1
Config Type: 4 (USBIF-MBIM-V2)
Interface bitmask: 00001009 (diag,modem,mbim)

After changing it to 1,4,00001008, and resetting the modem, I can’t set it back to the original value.

at!entercnd=“A710”
OK
at!usbcomp=1,4,00001008
OK

at!reset
OK

at!entercnd=“A710”
OK
at!usbcomp=1,4,00001009
ERROR

I would like to avoid an RMARESET if possible… any ideas?

@SMRochon

I presume you have tried variations on the command i.e. at!usbcomp=1,4,1009?

No specific reason I can think of or issue I can see in the system that might cause this.

Regards

Mat

Thanks.

It’s very easy to reproduce. Once you go to a usb comp without DM port, it’s impossible to go back unless you issue an !rmareset.

See attached.