1. Attempt to detect the USB mass storage device with a FAT32 file system.2. Verify whether the boot-loader update image name is correct or not.3. Verify the integrity of the boot-loader update image.4. Attempt to perform a boot-loader update if the correctly named boot-load update image is located on the USB mass storage device.5. Write, read an erase the protected region on Flash memory.
本文转自Jake Lin博客园博客，原文链接：http://www.cnblogs.com/procoder/archive/2010/06/10/Boot-loader-update-sequence.html，如需转载请自行联系原作者
