Interestingly, this: https://en.wikipedia.org/wiki/Apple_T2#Security_vulnerabilities https://en.wikipedia.org/wiki/Apple_T2#Security_vulnerabilit... reads as

Interestingly, this: https://en.wikipedia.org/wiki/Apple_T2#Security_vulnerabilities https://en.wikipedia.org/wiki/Apple_T2#Security_vulnerabilit... reads as though it is possible using "checkra1n". But again... it might be easier to just buy something else :-/