J-Flash Error on MIMXRT1064: Verification of RAMCode failed @ address 0x...

[noni082002]

Hi,

I can detect and connect to a MIMXRT1064 using JFlasher ARM with JFlash software.  But I could not do any readback or programming.

It always meet with some sort of RAMCode failure resulting with 'Failed to prepare for programming'.  I have tried V7.58 as well as V7.92.

Any advice please, thank you.

[diego_charles]

Hi @noni082002 

I hope you are doing well! 

From my perspective you can double check HW setup first. Here are some general pointers:

• For programming operation, by default the i.MX RT10xx uses SWD  to use JTAG you need to burn a fuse. 
• Double check the JTAG_MOD, this pin should be pulled low to enable programming.
• Ensure that debugger has access to the reset_b pin.
• Check the boot mode and boot config pins. The internal boot from flash requires  to leave boot mode pins to 0b10 and all boot config pins to zero.
• Sometimes  it is useful to set the MCU to boot in serial downloader (boot mode pins to 0b01) and then do a mass erase. If this succeeds, try to program one more time and set boot mode to internal boot. This is a common practice to regain debug access.
• Consider double checking your design against the latest version of our  Hardware Development guide * MIMXRT105060HDUG) and i.MX RT1064 EVK. 
• Debugging is always simpler when no fuse has been burned. Because fuses can alter the boot mode, boot config, security state, debug interface etc.

All the best, 

Diego

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