It provides a granular look at the data exchange, capturing events that occur in real-time. Debugging Assistance:
Use Trace Mode when you need low-level, high-frequency, non-stop execution history without halting the CPU.
| Scenario | Logcat | Dmesg | JTAG Debugger | SP Flash Tool Trace Mode | |----------|--------|-------|---------------|--------------------------| | Kernel panic before init | ❌ No | ❌ Not logged | ✅ Yes | ✅ Yes | | Bootloop in Preloader | ❌ No | ❌ No | ✅ Yes | ✅ Yes | | Real-time power transition analysis | ❌ No | ❌ Too coarse | ✅ Yes | ✅ Yes | | Non-invasive tracing (no breakpoints) | ✅ Yes | ✅ Yes | ❌ Affects timing | ✅ Yes | | Tracing across CPU idle/suspend | ❌ No | ❌ Stops | ❌ Stops | ✅ Yes | | End-user device | ❌ Too slow | ❌ Too slow | ✅ Requires hardware | ✅ Requires engineering boot |
To interpret trace mode logs, you must understand how the tool speaks to a raw device. The software relies on three core operational pillars to flash or recover system software. 1. The Handshake Protocol (BROM & Preloader) Smartphone Flash Tool -runtime Trace Mode-l
Runtime Trace Mode is a specialized feature in the SP Flash Tool that displays detailed logs of the communication between the tool on your PC and the connected MediaTek device. It is essentially a "monitor and debug" window that opens alongside the main flashing interface.
Disclaimer: Modifying smartphone firmware carries inherent risk. Runtime trace mode is a diagnostic tool intended for authorized service personnel and advanced developers. Always ensure you have the legal right to modify the target device.
When reviewing the runtime trace logs, look for these common architectural checkpoints: Log Milestone BROM Stage It provides a granular look at the data
[DA] Executing RAM test... PASS. Switching to UFS mode. Diagnosis: If it hangs on "Switching to UFS," your phone has eMMC, not UFS. Force a format in the tool's "Memory Test" tab.
This report provides a technical analysis of the "Runtime Trace Mode" functionality found within Smartphone Flash Tools (SFT), specifically focusing on the SP Flash Tool utilized for MediaTek (MTK) chipset devices. Runtime Trace Mode is an advanced diagnostic feature designed for firmware debugging, performance analysis, and troubleshooting system-level errors during the flashing process. It allows engineers to monitor the real-time execution flow of the device's bootloader and operating system initialization.
It exposes exactly where an operation fails, whether during the initial handshake, partition formatting, or sector writing. The software relies on three core operational pillars
The tool is attempting to establish communication with the hardware chip. DA (Download Agent) Stage
Smartphone Flash Tool Runtime Trace Mode: A Comprehensive Guide