Installer in russian and can't change language

I followed dortania guide for opencore 0.7.6 and this efi for my thinkpad t440

but my installer is russian

specs:

I5 4300u

8GB RAM DDR3

240GB SSD SATA

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what I tried:

Set to "656e2d55533a30" for American, nothing to do

set to "ZW4tVVM6MA==" from notepad++, nothing

set to "it-IT:4" for italian, nothing

set to "en-US:0" for american, nothing

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other question: I read that resetting NVRAM in thinkpads could brick or semi-brick my laptop, which is the best way to reset NVRAM, I have read updating the bios but I am at 2.49 I am afraid that when I have finished the updates I will not be able to anymore reset the nvram. Are there any alternatives?