Converting .usv files to .vcf format.
It appears that contacts exported as .usv files from outdated LG Xenon mobile devices cannot be converted to any other contact file format, including .vcf (vCard Files).
Try saving all your contacts on a SIM card, and then exporting them from that SIM card to a different mobile device. A special CD software was part of the LG Xenon purchase package. Try contacting LG support to see if that software is still available.
The database currently does not contain any usv software converter.