Executing flash operation 'Program' (Program file into flash: evkmimxrt1064_hello_world.axf) - Wed Aug 06 11:40:41 KST 2025
Checking MCU info...
Scanning for targets...
Executing flash action...
LinkServer RedlinkMulti Driver v25.7 (Jul 21 2025 19:34:07 - crt_emu_cm_redlink.exe build 1038)
( 0) Reading remote configuration
Wc(03). No cache support.
Found chip XML file in C:/Users/user/Documents/MCUXpressoIDE_25.6.136/workspace/evkmimxrt1064_hello_world/Release\MIMXRT1064xxxxA.xml
( 5) Remote configuration complete
Reconnected to existing LinkServer process.
Connecting to probe 1 core 0 (using server started externally) reports:
'Ee(42). Could not connect to core.'
Retrying...
Reconnected to existing LinkServer process.
Server OK but no connection to probe 1 core 0 (after 3 attempts) - Ee(42). Could not connect to core.
============= SCRIPT: RT1064_connect.scp =============
RT1064 Connect Script
Error: Wire Ack Fault - target connected?
Error: Wire not connected
Error: Wire not connected
Disabling MPU
Error: Wire not connected
Error: Wire not connected
Configure FlexRAM for 768KB OC RAM, 128KB I-TCM, 128KB D-TCM
Error: Wire not connected
Error: Wire not connected
Error: Wire not connected
Finished
============= END SCRIPT =============================
Failed on connect: Ee(42). Could not connect to core.
No connection to chip's debug port
(100) Target Operation Failed
Unable to perform operation!
Command failed with exit code 1* MIMXRT1064-EVK
* MCUXpresso IDE 25.06
I've tried rebooting the computer, restarting IDE, reconnecting the USB cable, and pressing the reset button.
It worked normally until yesterday, but it suddenly doesn't work today.
How can I solve this problem?
You are welcome.
If you meet any issues in the future, please feel free to create a new post .
We will do our best to support you.
Best Regards
Thank you so much
Yes, you can try to use J-link device to debug.
LinkServer not found in MCUXpresso.
There is a light on the LED next to J1 and a light next to J41.
Should I try the J-Link device?
If the light turns on Next to J1, please try to use J41 or use J21(J-link device) to debug your board.
Please attempt to connect pin 3 and pin 4 of J1, using a new available USB cable to insert into J9. Check if the LED light turns on.
Hi @minwon ,
Please check whether your board is powered on successful.
First, check the connection of J1. If power is supplied via the onboard J41 USB, pins 5 and 6 of J1 should be connected together.
When you connect the USB of J41 to the computer, the D3 LED next to J1 will light up.
Please try as I mentioned above, and then check if the D3 light is on.
Best Regards
MayLiu
I can't erase the chip because it's not connected from the beginning.
No light comes on even if I powered on, is this a normal situation?
Hi @minwon ,
Do not worry, I will help you to fix your board.
First, set SW5: 0000, SW7:0001, then power on. This mode is serial downloader mode.
Second: use the J-Link device to connect to the J21 interface of the RT1064 development board, create new project for your board, and erase the chip.
Third, When step 2 finished, Power off your board. set SW5: 0000, SW7:0010, then power on.
Finally, your board will work normally, you can debug the SDK demo again.
Please try it.
Best Regards
MayLiu
I connected the J-Link and connected the Power, but the Connection error still occurs.
It's only been a few days since I bought a board, is my board broken?
Hi @minwon ,
thanks for your updated information.
Do you have a J-Link device? Have you tried using the J-Link device to connect to the J21 interface of the RT1064 development board and debug?
Best Regards
MayLiu
I turned around the MIMXRT1064-EVK sample project (demo-apps/hello_world, demo-apps/iled_blinky) yesterday and even confirmed that the debugging was successful.
And I tried debugging the sample project again today and it didn't connect.
In the meantime, IDE has never touched the settings or modified the hardware.
SW5 is 0000 and SW7 is 0010.
Now, Now I'm copying this document. (https://docs.nxp.com/bundle/AN13206/page/topics/getting_the_firmware_images.html)
In step 6, the message below was output.
Cannot open DFU device 1fc9:000c Booting LPCScrypt target with "LPCScrypt_240.bin.hdr" LPCScrypt target booted
Step 7 is still being carried out. The dots are continuing.
Erasing BankA ............
Hi @minwon ,
Thank you so much for your interest in our products and for using our community.
Could you tell me what the actions you performed before the MIMXRT1064-EVK development board became unable to debug?
Please check the configuration of SW5 and SW7, default setting should be SW5[1:4]:0000, SW7[1:4]:0010.
Have you made any hardware modifications to the MIMXRT1064 development board?
Best Regards
MayLiu