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Dell DW5811e / Sierra Wireless EM7455 WWAN Not Working


Nancy10
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So, I've managed to get my Latitude E7470 working using the Catalina Clover guide, but I'm struggling to get the DW5811e / EM7455 WWAN card to work.

 

The card shows up under System Report > Hardware > USB as "DW5811e Snapdragon X7 LTE" but nothing appears in the WWAN menu option.

 

I've tried to edit the CellPhoneHelper.kext to add an option with Product ID 0x81B6 / 33206 and Vendor ID 0x413C / 16700 (the details I got from the above report on the USB page) but it doesn't appear to have worked (though didn't break anything either!)

 

Would appreciate it if anyone who's got it to work or has any suggestions could give me some pointers.

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After having to re-install I tried modifying the CellPhoneHelper.kext and managed to get the DW5811e to show up under System Report > Network > WWAN, but it still doesn't seem to appear in the network settings menu. I presume I've probably misconfigured the CellPhoneHelper.kext as I copied the Sierra Wireless AC 595 Modem kext and modified it to pick up the DW5811e but that uses CDMA instead of GSM. I suspect having the "ActivatorPath" set brought the WWAN card online but that the other misconfigured options are the reason Mac OS isn't picking it up correctly.

 

I'm going to try adjusting it and will come back with what happens! 

 

873235747_ScreenShot2020-03-21at3_07_07PM.thumb.png.9136acdb5246e37c430f35cdaceaedfb.png

 

Here's the key I've added to the Info.plist inside the CellPhoneHelper.kext: 

<key>0x413c/0x81b6 Sierra Dell DW5811e</key>
<dict>
        <key>CFBundleIdentifier</key>
        <string>com.apple.driver.AppleUSBHostMergeProperties</string>
        <key>IOClass</key>
        <string>AppleUSBHostMergeProperties</string>
        <key>IOProviderClass</key>
        <string>IOUSBHostDevice</string>
        <key>IOProviderMergeProperties</key>
        <dict>
                <key>DeviceModemOverrides</key>
                <dict>
                        <key>ConnectionPersonality</key>
                        <string>Sierra CDMA Personality</string>
                        <key>ConnectionScript</key>
                        <string>WWAN.ccl</string>
                        <key>DeviceModel</key>
                        <string>CDMA</string>
                        <key>DeviceVendor</key>
                        <string>Sierra Wireless</string>
                </dict>
                <key>DevicePPPOverrides</key>
                <dict>
                        <key>LCPMTU</key>
                        <integer>1450</integer>
                </dict>
                <key>EndpointMapping</key>
                <dict>
                        <key>82</key>
                        <string>wwan</string>
                        <key>84</key>
                        <string>wwanCNTL</string>
                        <key>85</key>
                        <string>wwanGPS</string>
                </dict>
                <key>InfoCommands</key>
                <dict>
                        <key>ATCommands</key>
                        <dict>
                                <key>ESN</key>
                                <string>+gsn</string>
                                <key>Manufacturer</key>
                                <string>+gmi</string>
                                <key>Model</key>
                                <string>+gmm</string>
                                <key>ModemSW</key>
                                <string>!mdmver</string>
                                <key>PRL</key>
                                <string>!prlver</string>
                        </dict>
                        <key>HiddenProperties</key>
                        <dict>
                                <key>ActivatorPath</key>
                                <string>/Library/Application Support/SierraWireless/SierraWWANActivation.app</string>
                                <key>CommandPortBaseName</key>
                                <string>wwan</string>
                                <key>ControlPortBaseName</key>
                                <string>wwanCNTL</string>
                                <key>DataPortBaseName</key>
                                <string>wwan</string>
                                <key>StatusType</key>
                                <string>SierraCDMA</string>
                        </dict>
                </dict>
                <key>Initializing</key>
                <true/>
                <key>WWAN</key>
                <true/>
        </dict>
        <key>bcdDevice</key>
        <integer>2</integer>
        <key>idProduct</key>
        <integer>33206</integer>
        <key>idVendor</key>
        <integer>16700</integer>
</dict>

 

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I've tried a few other configurations from some of the other natively supported Sierra GSM WWAN cards, but still nothing more than showing up in the System Report > Network > WWAN. Also checked to verify that all of the AT commands work with the DW5811e (Sierra EM7455) which they appear to.

 

Seems to be a Qualcomm MDM9230 chipset, so going to see what other supported cards I can pick profiles from.

Edited by Crashdoom
Add Chipset Info
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