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FRDM-K22F failed in Changeing OpenSAD firmware

Question asked by Jack Xu on Aug 7, 2016
Latest reply on Aug 9, 2016 by ZhangJennie


Hi there,

 

Today i received the FRDM-K22F, as it can not download the routine by J-link or OpenOCD or PEMicro. So i followed the "Quick Start Guide fro the Freescale Freedom Development Platform FRDM-K22F", when i follow the page 9 and try to enter bootload mode, but there is no drive shows, just as normal nothing happens.

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    After finish this, nothing happens, and there is no removable driver, also the RGB light stops flickering. What can i do now? is there some problem with my hardware?

 

-Thanks in advance!

-Jack

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