To use Flashtool v0.2.9.1, the following environment is typically required:
There is no "Format All + Download" button like in modern tools. Formatting is done manually via "Format" tab or "Memory Test". flashtool v0291 13
Always perform a Readback of the entire flash on a working device before attempting any modifications. Keep the original scatter file, preloader, and NVRAM backup in a safe location. To use Flashtool v0