Managed to get my hands on a EM9190 from AliExpress. It looks like an old FW, 16.04.00 2020/06/02.
To other users, I will just let you know that most of the M.2 adapters to USB(3) adapters available will not work with this modem, without some rework.
I have been using EM7565 as well, but this modem has a few extra pins for VCC, VBUS_SENSE and a PCIE_DIS pin that needs to be pulled high to 1.8V to force the USB interface to be enabled. After that you will see a USB device 1199/90D3 enumerate.
I hacked the existing Linux USB drivers and got the usbtty0 port up and running and was able to open the AT command interface.
The modem comes up with the MBIM enabled, but I would like to change this to the RMNET to control the modem using QMI.
A few weeks ago the AT command spec for this modem became available, and according to the spec and the modem’s own help, I tried to change the USBCOMP, but got errors only. It seems like I can only set the USBCOMP to 1,4,100B, that’s the only value I have found that doesn’t return an error. Is this a feature not yet supported in the FW I have? I would like to run 1,4,10D, disable the MBIM and enable the RMNET.
I feel like I am wasting my time here? Is there another FW out there that will enable this?
Sierra WIreless: I know you will just point me to my commercial distributor or account manager for support, which is a deadend for me. But can you at least answer me (us) when will new FW releases be ready on your site? Any way to do a FOTA at this point? The module is commercially available according to your press releases, but not much info on your product page yet, no drivers, no SDK. Any time line you can share?