When ISO split land from Finland, GEC did not, so that is one more point of difference between them.
There was not much to do because UVG was the only institution connecting to the Internet, through UUCP.
IOC - The International Olympics Committee code for Yugoslavia changed from YUG to SCG at about the same time as the ISO Alpha-3 code.
Faroe Islands didn't compete in the 2004 Olympics, but in the Paralympic Games they were identified by FRO rather than the former code, FAR.
The UU code was revoked in 2010-04 with the changeover to Geopolitical Entities and Codes.
Finally, GEC allocates codes to the Paracel (PF) and Spratly (PG) Islands, two island groups in the South China Sea that are claimed by every country within shooting distance; ISO 3166 is noncommittal about the Paracels and Spratlys.