Hi @nickager
I hope to find you well.
The i.MX RT1170-EVK implements LPC43xx as the on-board debugger, and the i.MX RT1170-EVKB the LPC55s69, ( MCU-Link). Maybe that is the reason why you had issues.
Please make sure to download Linkserver from here Linkserver 1.5.30 installer for Windows . After installing the SW execute the update script at C:\nxp\LinkServer_1.5.30\MCU-LINK_installer\scripts (using default installation path)
The MCU-Link FW is now being distributed at LinkServer for Microcontrollers page referecenced above.
I hope this could help you!
Diego