Smartphone Flash Tool -runtime Trace Mode- New! -

Many newer SoCs (MediaTek Helio G90+, Qualcomm SM8250+) use encrypted download agents. The trace output will show only hex dumps or [SECURE] stubs instead of plaintext messages. In such cases, only the OEM or a leaked engineering DA can produce readable traces.

Runtime Trace Mode is a diagnostic logging feature integrated into the SP Flash Tool. It is designed to capture a detailed, step-by-step log of the communication process between the computer and the smartphone's processor. smartphone flash tool -runtime trace mode-

| Byte 0 | Byte 1-4 | Byte 5-8 | Byte 9 | |--------|----------|----------|--------| | Type (0xE1) | PC Value | Address (if load/store) | Flags (IRQ, Thumb, Privilege) | Many newer SoCs (MediaTek Helio G90+, Qualcomm SM8250+)

A Xiaomi phone flashed with a global ROM fails at the cust partition. The tool just says ERROR: STATUS_EXT_RAM_EXCEPTION . The runtime trace shows: Runtime Trace Mode is a diagnostic logging feature

Identified that the OEM’s flash tool was not updating the corresponding hash fuse, causing authentication failure.

| Transport | Max Speed | Pros | Cons | |------------|------------|------|------| | UART (3-pin) | 921.6 kbps | Simple, works on bricked devices | Slow for deep traces | | USB 2.0 (bulk) | 480 Mbps | Fast, no extra wiring | Requires working USB stack in preloader | | SWD (JTAG) | 10 MHz | Full CPU control | Requires soldering, vendor lock |

class RuntimeTraceMode HANDLE hTracePipe; // separate thread void OnTracePacket(BYTE* data, DWORD len) if(data[0] == TRACE_PC_PKT) uint32_t pc = *(uint32_t*)(data+1); auto sym = symtab.Find(pc); Log("PC: 0x%08X (%s)", pc, sym.name);