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Dell DW5811e / Sierra Wireless EM7455 WWAN Not Working


Nancy10

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Hi!

Did anybody try setting modem port to 6 or 8 as described here?:

https://osxlatitude.com/forums/topic/8006-sierra-wireless-qmi-modules-mcem73xx77xx8805etc-dell-dw557058085809etc/

Quote

 

For Legacy use, Modem port must be enabled in configurations modules:

example, USBCOMP = 6, or 8

 

 

@influenist  this script that you mentioned sets the card in MBIM only (+AT) mode. If Im not mistaken for OSX and this kext we need to put the card in the mode that supports QMI mode also? 

Quote

- Sets MBIM Mode with AT Commands Access

https://www.ttl.one/2018/07/sierra-wireless-lte-autoflashing-em74xx.html

 

So for example on this page that was linked scripts github page (https://zukota.com/sierra-wireless-em7455-how-to-enable-com-ports/) the modem supports mode 6,8, and 9, and was set in mode 8 that doesn't support QMI

Quote

 8 - DM  NMEA  AT  MBIM  SUPPORTED

But if we set modem (manually, without script) to modem config 6, that mode support QMI

Quote

 6 - DM  NMEA  AT  QMI  SUPPORTED

 

Can anybody please check if this solves this issue so I can go order this card on Ali? :)

instructions here: https://zukota.com/sierra-wireless-em7455-how-to-enable-com-ports/ 

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No. I try USBCOMP=8 and USBCOMP=6. Error is in 

Thu Oct  1 20:02:53 2020 : Initializing phone: ATE0V1&F&D2&C1S0=0
Thu Oct  1 20:02:53 2020 : Initializing PDP context: AT+CGDCONT=1,"IP","internet.ntc"
Thu Oct  1 20:02:53 2020 : Dialing: ATD*99***1#
Thu Oct  1 20:02:53 2020 : Waiting for connection
Thu Oct  1 20:02:53 2020 : Modem error; the modem is not responding.
Thu Oct  1 20:02:53 2020 : CCLExit: -6019 (Modem error, modem not responding.)
Thu Oct  1 20:02:53 2020 : Connect script failed

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Hey @miki991 , I tried all sorts of combinations yet can't remember exactly though if I followed up your notes. Even made the kext working for the 3 variants. I'll retry this at some later stage as I'm too caught up with work / private life. Why not buy the card and help the community ?! :-)

 

Attached the latest version I could find in my backedup EFIs.

Legacy_Sierra_QMI.kext.zip

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On 10/1/2020 at 8:19 PM, marvin_666 said:

No. I try USBCOMP=8 and USBCOMP=6. Error is in 

Thu Oct  1 20:02:53 2020 : Initializing phone: ATE0V1&F&D2&C1S0=0
Thu Oct  1 20:02:53 2020 : Initializing PDP context: AT+CGDCONT=1,"IP","internet.ntc"
Thu Oct  1 20:02:53 2020 : Dialing: ATD*99***1#
Thu Oct  1 20:02:53 2020 : Waiting for connection
Thu Oct  1 20:02:53 2020 : Modem error; the modem is not responding.
Thu Oct  1 20:02:53 2020 : CCLExit: -6019 (Modem error, modem not responding.)
Thu Oct  1 20:02:53 2020 : Connect script failed

My modem also somehow reports "internet.ntc" and "NTC" instead of "internet.mts.ru" and "MTS RUS", though with other SIM card it displays "internet.mts.ru", and AT commands with both SIM cards show "MTS-RUS".

I tried to connect manually using AT commands and

ATD*99***1#

gives ERROR

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