新做的IMX6核心板在烧系统时卡在Loading U-boot这里，没能烧录进去。DDR3测试过没有问题，不知道是哪一步出错。
IMX6小白的求助：新做的IMX6核心板在烧录系统的大体步骤有哪些？
（比如需要先做什么测试，再做什么操作，一直到最后一步烧录系统）
which board are you using as your design reference?
which BSP are you using?
If you are using mfgtool, you need to rebuild the firmware.
https://community.nxp.com/message/1042399
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