Hi,

Please let me know the sdk version,

From the question description looks like you are on linux sdk and not mcu plus sdk. 

Thanks,

Vaibhav

I don't think that there is something wrong with the SDK. Because it ran well and suddenly didn't work . I use the U-BOOT to enter in the shell to load my system operation. At the begging i got in the shell ,and it reported "can't recognize the jedec ID "ff,ff,ff"" when  i do some read operation to the flash. I reset the board and boot from the flash .but it repoerted error. Then i boot from the uart and get in the shell . I write "sf probe", it reported "

failed to initialize the flash at 0:0

"

That is the whole process of  what i experienced with the flash .thanks

sorry to add a supplement that i didn't use the whole SDK. I just use the u-boot to boot my os. I download the U-BOOT into the flash or load the u-boot through the uart to boot my os. Now the u-boot can't be booted from the flash and i can't probe the flash through the uart load either. Thanks 

Hi,

I have assigned this thread to the correct expert. Please expect responses in sometime.

Thanks,

Vaibhav