ULINK Plus power measurement

Hi All,

I've been successfully using a ULINKPlus debugger (FW Version 2.0.11) in "Energy Measurement without Debug" mode to do accurate low power measurements.

On the last few MDK-ARM releases Keil has been asking me to upgrade to the latest FW version 2.1.3 whenever I interact with the debugger. This FW version unfortunately causes significant (>2mA) leakage current to be introduced to the measurement. 

Am I missing a debugger config that will fix said leakage current or alternatively, is there any way to stop Keil from requesting the debugger FW update?

Thank you in advance.