Smartphone Flash Tool -runtime Trace Mode-l [verified] Here

What is the (e.g., MT6750, MT6833) of your device? Which version of SP Flash Tool are you currently running?

[EMI] Probing rank 0... Failed. [EMI] Falling back to single-rank config at 0x40000000.

Or wherever your flash_tool.exe resides.

This flag instructs the tool to not just send commands to the device but to actively monitor the execution environment of the target’s boot ROM and pre-loader. It initiates a live data stream from the device’s internal debug UART or USB debug interface. Smartphone Flash Tool -runtime Trace Mode-l

flash_tool.exe -runtime Trace Mode -l 5

It generates a real-time log of the communication (handshake) between the tool and your device's preloader/VCOM port.

is a widely-used Windows and Linux application developed by MediaTek for flashing firmware, custom ROMs, and recovery images on devices powered by MediaTek (MTK) chipsets. What is the (e

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: The tool sends a continuous sequence of 0xA1 start bytes over the USB virtual COM port (VCOM).

: It flags the millisecond a memory block fails to read or write, outputting exact low-level hex codes. Why Use Runtime Trace Mode? Failed

If a flash fails at 0% or mid-way, the trace log reveals specific hex codes or timing errors that the standard progress bar won't show.

MediaTek USB VCOM drivers are notoriously unstable on modern operating systems. Trace logs show if the driver is dropping the connection during the handshaking phase.