To update the software on a JTC (Jay-tech) TV, you can typically perform the update directly through the TV's system menu. For smart models, such as the JTC 32" HD Smart TV S32H23254JK
This guide will walk you through everything you need to know about finding, downloading, and installing the correct software for your JTC TV. jtc tv software update download
To avoid scrambling for firmware files in the future: To update the software on a JTC (Jay-tech)