Hi @TaliB
The i.MX RT700 is still under preproduction, therefore, I should only remind you that your main support channel for you is your direct NXP representative.
Are you running Linux natively or in a Virtual Machine? Also, which distro are you using?
I see that you are running a GDB server command. I do not know if this problem on your OS. We can try narrow down the issue by testing other linkserver commands. You could try using the LinkFlash GUI to test easily other commands.
Thank you,
Diego