I've checked and probably and unfortunately mislead it with 3DSMax plugin. But I'm sure I saw somewhere Blender plugin. :/
I have only those which You can find in icon tools category in Windows section:
https://archive.org/details/aio-project-ps2-v201
Thanks for the help. Your comment actually lead me in the right direction and I found that Milkshape 3D has a PS2 icon importer/exporter and it works great! Milkshape PS2 Icon Importer/Exporter | PS2 Save Tools
Now that you're able to run the full version of OPL from the browser with DS3 support and as the browser is quite snappy with a SSD I thought I'd make some 3D icons of PS2 game cases. I've made a few already.