That ini file is the one responsible for wifi country, not other blobs. The setting gCrdaDefaultCountryCode is commented out in LG's V30a and V30b, so the value is not forced and you can choose the wifi region from advanced wifi settings. The problem is that choosing wifi region from cm-12.1 settings isn't working properly (I have to look into that), so a workaround for now could be using gCrdaDefaultCountryCode. About gStaCountryCode=BR, these are the possible values:
# KOREA = KR, USA = US, JAPAN = JP, BRAZIL(LATIN AMERICA)/EU/others = BR
So BR is for every country except Korea, USA and Japan. In your case, you could set this: gCrdaDefaultCountryCode=GB (uncommenting the line, of course), which is the default value for Europe.