Honestech's original domain ( honestech.com ) has changed ownership and no longer provides active support for legacy products. The company shifted focus to new hardware and software-as-a-service models. Consequently, the official download servers for TVR 2.5 drivers have been offline for several years.
Modern versions of Windows don’t natively support software designed for Windows XP/Vista/7, but provides a workaround. However, note that results vary significantly by system: Honestech Tvr 2.5 Driver Download