今天遇到STM32 下載問題，百度半天沒找到解決辦法；在此記錄一筆：

環境： IAR 7.2

開發板： STM32F103C8T6

下載方式： SWD

下載失敗的log大概如下：

Fri Nov 14, 2014 17:22:59: ST-Link firmware too oldFri Nov 14, 2014 17:22:59: Connected to ST-Link/V2  Firmware V2.J21.S4 (PRobe no: D1A2B612)Fri Nov 14, 2014 17:22:59: Selecting SWD as current target interface. Fri Nov 14, 2014 17:22:59: ELF/DWARF Error: Unknown Fri Nov 14, 2014 17:22:59: 0 bytes with download suppressed Fri Nov 14, 2014 17:22:59: Failed to load debugee: D:/project/stm32/program/STM32F10x_StdPeriph_Lib_V3.6.1/Project/STM32F10x_StdPeriph_Template/EWARM/STM3210E-EVAL_XL/Exe/Project.out

我是這樣弄的：

右擊工程->Options->Debugger->Download; 如下

在下面的Override default board file 中選擇你的版子的型號即可