change license from xg230 internal serial numeber to free xg home

We have test and demo old UTM SG230 appliance setuped. Problem is that by finsing the initial wizard to register the device for a valid license, the build in serial number was used.
Before we setup a vm appliance without any problems. Now we want to change. I need to change the XG Home free license to current SG230 appliance. Resinstall could not solve the problem because the registration was already done after config restore via internet with same limited 4 weeks license.
Is it possible to change my serial number or  delete my registered device and I can start reinstall again and try to register with a free serial number?

Current: S210353312EC1AF is is only valid until 12th jul
Target: C01001VQXXXXXX sholud be used