I just realized that this would be better posted in the Lcenses and Installation Community. I will move the post there.
Hacking a license file will not work. Please log into the Mentor Embedded Portal (https://sourcery.mentor.com/GNUToolchain/) and create a support ticket with the title "License Key Rehost Request". Provide the the old and new host id and we will update our system. You will then be able to download a new license file.