BIG-IP : upgrade fails to transfer configuration

BIG-IP 11.4.0 Build 2384.0 Final

I want to upgrade to 11.4.1 retaining current configuration.

I downloaded BIGIP-11.4.1.608.0.iso and uploaded to BIG-IP and installed to volume HD1.2 ( HD1.1 has 11.4.0 ).

System > Software Management : Boot Locations

I select HD1.2 , set Install Configuration to Yes , set Source Volume = "HD1.1:11.4.0" , and click Activate

However on reboot the message is displayed :

The configuration has not yet loaded. If this message persists, it may indicate a configuration problem.