Can EFI update be rolled back?

I installed the EFI update and now my e-sata drive I use for Time Machine won't mount. Worked perfectly before the update.
Is there any way to roll it back to the previous version?
Cliff

Cliff Addy wrote:
I installed the EFI update and now my e-sata drive I use for Time Machine won't mount. Worked perfectly before the update.
Is there any way to roll it back to the previous version?
No. It would be nice if Apple were to offer that option,
but currently they don't.

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