Sierra 7355 help

stephenw10

Check the USB IDs it reports with: usbconfig -d ugen1.2 dump_device_desc

It shows as a Dell device so it will probably require setting to a different USB composition. You will need to do that in Linux or Windows if so.

Steve

nanoken

@stephenw10 it shows ugen1.2: <Sierra Wireless, Incorporated Dell Wireless 5808 Gobi 4G LTE Mobile Broadband Card> a, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON (500mA)

bLength = 0x0012
bDescriptorType = 0x0001
bcdUSB = 0x0200
bDeviceClass = 0x0000 <Probed by interface class>
bDeviceSubClass = 0x0000
bDeviceProtocol = 0x0000
bMaxPacketSize0 = 0x0040
idVendor = 0x413c
idProduct = 0x81a8
bcdDevice = 0x0006
iManufacturer = 0x0001 <Sierra Wireless, Incorporated>
iProduct = 0x0002 <Dell Wireless 5808 Gobi 4G LTE Mobile Broadband Card>
iSerialNumber = 0x0003 <>
bNumConfigurations = 0x0002

stephenw10

Yes that's a Dell Vendor ID and a Product ID that isn't known:
https://github.com/pfsense/FreeBSD-src/blob/devel-main/sys/dev/usb/usbdevs#L1679

You will need to update the USB composition and identity. Similar to this:
https://github.com/danielewood/sierra-wireless-modems#change-modem-identity-sierra-wireless--lenovo--dell

Steve

nanoken

EDIT - GUIDE BELOW - POSTING ALSO IN MAIN FORUM POST (MC7355 INFORMATION WAS EVERYWHERE SO I WILL PUT THE STEPS BELOW TO HELP SOMONE)

Load Windows 10/11
2.Go here - https://zukota.com/posts/sierra-wireless-em7455-how-to-enable-com-ports/. - Download the .IMA and make the USB as the guide describes and follow the steps.
3.Back to windows - Follow the the BELOW guide up to the point where it says to connect to the COM port in windows via PUTTY
https://zukota.com/posts/sierra-wireless-em7455-how-to-make-it-work-with-an-older-lenovo-laptop/
4.Type the following in Putty once connected to the com port AT!UDVID=1199 and AT!UDPID=9041 and then at!reset
back to PFSENSE, it should now show at least

nanoken

This post is deleted!

stephenw10

I assume you found the correct port for the AT interface?

nanoken

@stephenw10 It now shows 4 options in Pfsense, do you have any information on finding out which one to set as the gateway/interface in PPP?

I actually had a read of your old posts here, any idea why after it shows connected with "cu -l /dev/cuaU0.2" I cannot type anything after? I have to close the SSH session?

https://forum.netgate.com/topic/146920/help-with-sierra-wireless-mc7355/8

I now have 4 options /dev/cuaU0.0, /dev/cuaU0.1, /dev/cuaU0.2 and /dev/cuaU0.3

and it now shows as ugen1.2: <Sierra Wireless, Incorporated MC7355> at usbus1, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON (500mA)

bLength = 0x0012
bDescriptorType = 0x0001
bcdUSB = 0x0200
bDeviceClass = 0x0000 <Probed by interface class>
bDeviceSubClass = 0x0000
bDeviceProtocol = 0x0000
bMaxPacketSize0 = 0x0040
idVendor = 0x1199
idProduct = 0x9041
bcdDevice = 0x0006
iManufacturer = 0x0001 <Sierra Wireless, Incorporated>
iProduct = 0x0002 <MC7355>
iSerialNumber = 0x0003 <>
bNumConfigurations = 0x0001

stephenw10

@nanoken said in Sierra 7355 help:

any idea why after it shows connected with "cu -l /dev/cuaU0.2" I cannot type anything after?

It might just not be configured to reflect back the characters you're typing. Try just entering: at at that port and see if it returns OK.

If you run usbconfig dump_all_config_desc against the device you will see the descriptions of each interface.

Steve

nanoken

@stephenw10 I have no idea why but now it won’t show it as a option again in interfaces. So I have no ‘dev//cua.. option at all.

ugen1.2: <Sierra Wireless, Incorporated MC7355> at usbus1 shows Still though so it’s defo connected.

I thought this chip was the easier one to be honest, shame as I bought the aerials and wanted it all in one box. If it comes to it do you know any mpcie that just Works with eu sims?

stephenw10

Did you change the USB IDs? Is i still showing as those?

The USB serial devices in /dev are created by u3g when it recognises a device. So if it isn't creating them it's not seeing a device it supports.

Steve