MitID chip
If you MitID chip is permanently blocked, you will be able to use the physical chip again and add it as a new MitID authenticator.
The explanation is that as you add a new MitID chip, a security element is created in the MitID chip with a corresponding element in the MitID solution. If your MitID chip is permanently blocked, then the security element in the MitID solution is deleted. When the same MitID chip is added again, then a new security element is created, thus enabling the physical MitID chip to be reused.
This is how you activate a MitID chip