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09-21-2020

CA

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WWAN card upgrade for Lenovo T470s

2020-09-21, 2:10 AM

Getting error message "1802 unauthorized network card is plugged in". The card I have is Sierra Wireless 7355. Any thoughts?

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12832 Posts

06-06-2011

RU

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WWAN card upgrade for Lenovo T470s

2020-09-21, 20:49 PM
Replace the wwan card since EM7355 isn't approved to use in T470s thus the BIOS/EC doesn't pass it and locks the laptop. EM7355 is applicable to older ThinkPads, x40 generation, as well x1 carbon gen2.



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
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