Inspiron 17R SE 7720 BIOS update?

I have a Inspiron 17R SE 7720 (Intel Core i7 3610QM Ivy Bridge). The BIOS version is A17 (dated 05/19/2015).

There does not seem to be a BIOS update listed at:

http://www.dell.com/support/article/au/en/audhs1/sln308587/microprocessor-side-channel-vulnerabilities-cve-2017-5715-cve-2017-5753-cve-2017-5754-impact-on-dell-products?lang=en

is there no Meltdown/Spectre BIOS update available for this laptop?

Thanks, Paul