After some testing it seams like the Nordic Generic (1257-6087) firmware does not exist..
I now have the Norway Generic (1257-8821) on my phone. When I tried changing build.prop and cust.prop to match 1257-6087 PCC would always turn off and check my phone before downloading any firmware. But when I change them to match the Swedish Generic (1257-6919) it downloads the firmware to blob_fs before checking the phone, it does complain and does not update the phone but since the files have been downloaded I can update it with flashtool.
My SI number is 1257-6087 but it does not seam to be any firmware with that customization number.. strange..