Modern SP Flash Tools require authenticated Download Agents signed by MediaTek. v5.01 predates these security requirements, meaning it can interface with preloader mode on old chips without signature checks. This is essential when official repair channels no longer exist.
The development of flashing tools has evolved significantly over the years. Early versions were often simple, command-line-based applications with limited functionality. As technology progressed, so did the complexity and user-friendliness of these tools. Modern flashing tools, such as the one referred to as "flashtoolv501", likely offer advanced features, including graphical user interfaces (GUIs), support for a wide range of devices, and detailed instructions to guide users through the flashing process. flashtoolv501