TPM upgrade to 2.0 for m6700 & Windows 11

I would like to upgrade my m6700 to Windows 11, but everything is pointing in the direction of not possible.

The TPM is 1.2, rather than 2.0.  I have tried up update, and trouble shoot, but it appears not to be possible - resulting in "system tpm query failed," when trying to install.  I have followed online trouble-shooting instructions (https://blog.arnonerba.com/2019/05/dell-tpm-1-2-to-2-0-upgrade-instructions, and https://www.dell.com/support/kbdoc/en-uk/000103639/how-to-troubleshoot-and-resolve-common-issues-with-tpm-and-bitlocker) without any success.

running the Windows 11 Healthcheck, it also suggests that my processor is not supported (Intel i7 3940XM CPU @3.00GHz).

If anyone else has had success, I would very much welcome your insight.

With thanks in advance.

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