Hi, To the best of my knowledge there is no technical difference between the IAR and the Segger J-Link. Segger develops the stuff and IAR is one of their OEMs. In order to use the Flashbreakpoint feature you will need a license key from Segger anyhow. Just send them an email with your company details and the serial number of your J-Link and they send you a 30 days eval license key. This is how is worked for me. The same applies for J-Flash. Paul