随着处理器的发展，IAP升级方式越来越受到欢迎。而IAP升级的方式也由很多，如：通过串口升级、GPRS远程升级、SD卡升级等等。-With the development of processors, IAP upgrade more and more popular. The IAP also upgraded by a number of ways, such as: upgrading through the serial port, GPRS remote upgrade, SD card upgrade and so on.