JTAG debugger doesn't work with i.MX8ULP PicoCore

I want to user in-circuit debugger J-Link in my i.MX8ULP PicoCore board. I attaches debugger and try to start debug session but always get an error. So I decided to find out the issue and use J_Link Commander. There is a connection log:

As you see, J-Link detected reference voltage as 1.8 V. It has a reason because there is a connection to 1,8V power source directly. I guess you ment that debug interface should work with this logic level (1.8 V). But it doesnt. I measure the voltage on unconnected debug socket and here is a result:

[IMG:https://i.ibb.co/mGFMRV8/jtag-trouble.png]

I see that CPU provides 3.3 V level on debug interface despite the interface socket provides 1.8V reference level to the debugger. So maybe this is the reason why debugger can't run debug session?

Also I attached logic probe log for 5 JTAG pins during the starting connect by J-Link commander session, you can open it in DSView 1.2.2 software or I can export it if you need.

JTAG connection logic dump

Any suggestions?

Hello. Are there any news about the issue? I really need to develop my application with my board.

I need my board working completely well. Could you tell me the information if you planning to produce fixed version of SOM and when it will be?