TEE is an environment with hardware backed attestation, you run a piece of software in the "black box" to do things like key generation etc. My educated guess,

TEE is an environment with hardware backed attestation, you run a piece of software in the "black box" to do things like key generation etc. My educated guess, having used TEE/TrustZone for keys is that they could update the payload (the "Trusted Executable") with a new one to resolve the issue.