求助！关于JTAG口烧写bootloader问题！
我用JTAG口烧写bootloader，出现以下问题：PLATFORM SELECTION:
Processor = PXA27X
Development System = Mainstone
Data Version = 1.00.002
error,failed to read device ID
check cable and power
ACT:1111 11111111111111 111111111111 1
EXP:**** 1001001001100101 0000001001 1
failed to read device ID for this Platform
出现以上问题我无法烧写FLASH，请有过该问题解决经验的前辈指点，不胜感激，谢谢！
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