Thinkpad T420 (4180-B83) & WWAN Ericsson F5521gw(DW5550)

Eager to try installing WWAN Ericsson F5521gw (DELL ver. DW5550) onto friend's Thinkpad t420 machine.

Thanks in advance!

Manu
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Lenovo Thinkpad T420
Model/Type: 4180-B83
BIOS: 83ET76WW (1.46) UEFI capable
BIOS Manufacturer: Phoenix Technologies
BIOS date: 07/05/2013
Embedded Controller Firmware Version: 1.20
BIOS link: http://support.lenovo.com/en_US/download...D=DS018785

WWAN card installed: NONE

WWAN to be installed: Ericsson F5521gw - DW5550 - DELL 5550
P/N: 2xgnj
FCC ID: VV7-MBMF5521GW1

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If this operation is possible, I would send back all result's data as soon as I relay the modded-bios file to T420 owner and explain procedure of flashing original bios with modded one..
People usually afraid to do bios upgrades around me, so I m persuading them to go free passing this forum knowledge to them Image may be NSFW.
Clik here to view.

THANKS MUCH,

Manu Zion