If the challenge-response method fails, hardware-based resets are often the only other option for newer models: Toshiba Challenge Response Code — Generator Upd
To unlock the device, a matching must be entered. This code is typically generated by authorized service providers using proprietary Toshiba algorithms. How to Generate the Challenge Code Toshiba Challenge Response Code Generator UPD
: Historically, users would call Toshiba Support or an Authorized Service Provider (ASP) with their serial number and challenge code to receive a response code. If the challenge-response method fails