Yeah that's total crap i wrote in a rush and not what i meant to say at all. I meant it will open, and extract symbols from, logo.bin files and will also open and extract symbols from fw1_resources.bin obtained from rgn and gcd files.
PS: But it can't open the 'old style' GIR files as i said, despite it's name. But of course turboccc never meant for it to do that, he was initially only interested in the symbols from 'new' firmware containing fw1_resources.bin. Naturally it will also happily open a dump from rgn127 [0x7F] because that's where fw1_resources.bin is flashed.