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javeryt1
Serial Port
Posts: 32
Registered: ‎10-19-2017
Location: US
Views: 857
Message 1 of 7

T470s WWAn help

Just received this laptop and I'm having issues with the WWAN device, Sierra EM7455. Have a SIM card in, and sometimes it works. But it is very finicky. Sometimes the device wont' start (error code: 10). Sometimes it says 'no service'. 

 

And like I said, sometmes it works fine for no apparent reason.

 

Is this a hardware issue? Or am I missing some key setup step? I have all the latest drivers installed and it is Verizon SIM. Any help would be much appreciated.

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Community SeniorMod
Posts: 11,891
Registered: ‎06-06-2011
Location: RU
Views: 843
Message 2 of 7

Re: T470s WWAn help

Hello

What's the em7455 firmware version? Did you install em7455 drivers from Lenovo site or you use the wwan card with OS native MBIM drivers?
What's the win10 version (update)?



x220 • Gobi 2000 3g | hdd, msata ssd, wwan, wifi, gps -- unique hand-made config
ThinkPad 25 Special Anniversary Edition. #retro. Signed by D.Hill
T470p | X1 Carbon Gen3 | Miix 2 10" | Yoga Tablet 2-1050F (Android) + BT Keyboard
ThinkPad Stack • 2.4/5 Wireless Router, HDD 1 TB, BT Speaker, Power Bank, Mobile Projector

Do it well, worse becomes itself

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javeryt1
Serial Port
Posts: 32
Registered: ‎10-19-2017
Location: US
Views: 830
Message 3 of 7

Re: T470s WWAn help

FW Version: SWI9X30C_02.24.05.06
Installed drivers from Lenovo site.
Win10 version is 1703. (can't do the 1709 update for a few reasons)

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Community SeniorMod
Posts: 11,891
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Location: RU
Views: 790
Message 4 of 7

Re: T470s WWAn help

The fw is the recent. The question is about default PRI image, i.e.cellular operator profile.

What's the modem' FRU code? Did you use the modem without Sierra drivers as win10 has its one ones? Did you use any connection manager?



x220 • Gobi 2000 3g | hdd, msata ssd, wwan, wifi, gps -- unique hand-made config
ThinkPad 25 Special Anniversary Edition. #retro. Signed by D.Hill
T470p | X1 Carbon Gen3 | Miix 2 10" | Yoga Tablet 2-1050F (Android) + BT Keyboard
ThinkPad Stack • 2.4/5 Wireless Router, HDD 1 TB, BT Speaker, Power Bank, Mobile Projector

Do it well, worse becomes itself

Communities:   English    Deutsche    Español    Portugues    Русскоязычное    Česká    Slovenská    Українська   Moto English

javeryt1
Serial Port
Posts: 32
Registered: ‎10-19-2017
Location: US
Views: 762
Message 5 of 7

Re: T470s WWAn help

Where do I find the FRU code?

 

I just got another identical T470s doing the exact same thing with the WWAN device. 
I'm installing Win10 from scratch, if that makes a difference. Then pulling the latest drivers with System Update. (Lenovo software)

 

EDIT: Actually this one does seem to be better, after a couple of reboots. At least for now.

Community SeniorMod
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Posts: 11,891
Registered: ‎06-06-2011
Location: RU
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Message 6 of 7

Re: T470s WWAn help

FRU and/or marketing p/n are printed on the modem' label. There are 7 em7455 with different FRU. Only 2 of them are compatible with T-ThinkPads

The question above: did the modem work without Sierra' drivers installed?
Does the 2nd T470s work properly with wwan modem?



x220 • Gobi 2000 3g | hdd, msata ssd, wwan, wifi, gps -- unique hand-made config
ThinkPad 25 Special Anniversary Edition. #retro. Signed by D.Hill
T470p | X1 Carbon Gen3 | Miix 2 10" | Yoga Tablet 2-1050F (Android) + BT Keyboard
ThinkPad Stack • 2.4/5 Wireless Router, HDD 1 TB, BT Speaker, Power Bank, Mobile Projector

Do it well, worse becomes itself

Communities:   English    Deutsche    Español    Portugues    Русскоязычное    Česká    Slovenská    Українська   Moto English

javeryt1
Serial Port
Posts: 32
Registered: ‎10-19-2017
Location: US
Views: 753
Message 7 of 7

Re: T470s WWAn help

The PN for the laptop itself is: 20JS0019US
Not sure about the modem pn, not sure where there would be a label for that.

Modem was still behaving strangely without drivers, but I didn't spend much time looking at it. Figured non-generic drivers would fix the issue.

Second T470s seems to be much better, but I need to test it more. It did come up disabled right after I put the SIM card in, but seems to have stabilized.

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