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T520: 1802 unauthorized mini PCI network card after bios update to version 1.49 / 8AET69WW

2018-09-28, 14:45 PM
I have an Intel Dualband Wireless Card AC 7260 / Model 7260HMW which is original installed in my T520 After this important BIOS update: BIOS Update Utility for Windows 8 (32-bit, 64-bit), 7 (32-bit, 64-bit), Vista (32-bit, 64-bit), XP - ThinkPad T520 and T520i 1.4926 Jun 2018/ BIOS Update Utility 6.38 MB / Severity Urgent I got the 1802 error message. I can´t "flash back" to the previous BIOS version (which is backed up) since the flash tool reports "the bios file doesn't match the machine" There was no warning in the txt file that there is an issue with the mini PCI Wireless Card. Is a fix out there? Thank you
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Re: T520: 1802 unauthorized mini PCI network card after bios update to version 1.49 / 8AET69WW

2018-09-28, 15:02 PM
Welcome to the Community

Intel 7260 card isn't approved to use in T520. If it worked in your laptop before the BIOS update, it means the old BIOS wasn't original but patched. New BIOS has replaced the old one and you've got 1802 error.



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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Re: T520: 1802 unauthorized mini PCI network card after bios update to version 1.49 / 8AET69WW

2018-09-28, 15:55 PM

Thanks a lot for the quick response.

I bought this machine refurbished - o.k. obviously with the wrong mini PCI Wireless Card.

Would the "Intel Mini-PCIe Wifi Wlan WiDi 802.11a-n Ultimate-N 6300 5Ghz ID13106" be o.k.?

Any recommendations?

Thanks a lot in advance -I appreciate it.

 

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Re: T520: 1802 unauthorized mini PCI network card after bios update to version 1.49 / 8AET69WW

2018-09-28, 16:06 PM

There are several cards that were tested for noise by the FCC in the U.S. and other regulatory agencies in the EU, etc.  They all have Lenovo FRU numbers that designate the cards as having the approved firmware.  Here is a link to the service manual.  Cards are listed starting on page 120.

 

https://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles_pdf/t520_t520i_w520_hmm_en_0A60078_08.pdf

 


Rich


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Re: T520: 1802 unauthorized mini PCI network card after bios update to version 1.49 / 8AET69WW

2018-09-28, 16:32 PM
> Would the "Intel Mini-PCIe Wifi Wlan WiDi 802.11a-n Ultimate-N 6300 5Ghz ID13106" be o.k.?

Generic card from Intel or for other laptop vendors - no, you'll get the same issue (1802 error). It should have FRU Lenovo, have a look at HMM above. For maximum performance (up to 450 Mbps) this card needs wlan 3x3 antennas to be installed on the laptop.



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

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