Lenovo ThinkPad Edge E330 - WWAN whitelist removal

Hello. Can anyone please remove WWAN whitelist from this BIOS:

-Manufacturer: Lenovo
-Motherboard Model: Thinkpad Edge E330 3354-AG1
-Bios revision: H3ET31WW (1.14)
-Bios Type: Phoenix EFI
-Bios Download Link (via Universal BIOS Backup ToolKit 2.0): https://dl.dropboxusercontent.com/u/6255....14%29.rom
-Lenovo package link: http://download.lenovo.com/ibmdl/pub/pc/...uj04ww.exe

There is also newer BIOS version on vendor site, but utility wont flash, just writes this to log:

Error : Fail to initialize flash.

Error code = 203

I suspect this could be caused by Secure Boot or some other option enabled, but i cant find any mention of those in bios setup. Also boot cd image they provide doesnt seem to be bootable at all.
Should i maybe try to install latest version under DOS and get back with newer ROM backup? Or Lenovo's flashers are somewhat special and simple DOS wont make the trick?

Thanks in advance.