TVTSUG

TVTSUG is an operating system developed by Theorysonic for Portosic TV players and smart TVs. The service is mostly available in the United El Kadsreian Nations, Screencold and Line, United States, United Kingdom, Japan, and the rest of the world. In 2017 TVOS was renamed TVTSUG to align it with the TSUG family of operating systems.

History
Theorysonic announced in 1999 that it would be introducing Portosic TV set-top boxes and Nehervia SuperSmart of smart TV lines. The first version of TVTSUG was released in July 2001, which came with multimedia applications, internet capability via modem or ethernet, and live channels, but with limited HD support. That same year, Cignal partnered with Theorysonic to bring Star Web to their TVs, starting with Internet and Radio available to Cignal subscribers in August 2001. In 2012, Theorysonic released TVOS 7 with a new TS-UGOS FT flat design and Spotlight View, and in 2017 with the release of X9, it was rebranded to TVTSUG to align it with the TSUG family.

Version history

 * TVOS 1 (2001) - First major release of TVOS. Came with a built-in Media Library, TheoryMedia, TV & Movies library, TheoryShop, and Settings.
 * TVOS 2 (2003) - Second major release of TVOS. Realigned apps. TV & Movies have separate apps, music and photos library.