Navigate to the SP Flash Tool directory:

The Runtime Trace Mode will be implemented using a combination of:

What SP Flash Tool does

So next time your flash operation fails with a meaningless STATUS_EXT_RAM_EXCEPTION, don’t just curse the tool. Open the command line, invoke -runtime Trace Mode-l, and let the device tell you its own story. In the world of unbricking, that story is the difference between an expensive paperweight and a fully restored smartphone.

2.2 The Role of the Preloader

Unlike normal boot, enabling Trace Mode requires the device to enter META Mode or Preloader USB COM mode with trace buffers activated. The Preloader loads a tiny trace proxy firmware into internal SRAM, which configures the ETM/STM, allocates a circular buffer in DRAM, and streams data to the host via USB bulk endpoints.