Partially. The algorithm for older e-STUDIO models (up to 2008) has been fully reversed and is available in open-source tools like ToshibaChallengeCracker . For modern models (2018+), no fully open implementation exists due to stronger encryption. The highest quality tools remain semi-private in technician circles.
Platforms like PrinterTechTools and MPS Diagnostics Hub offer subscription-based web apps that update their algorithm monthly. Look for: Toshiba.challenge.response.code.generator High Quality