Unofficial Spectre Patched BIOS for MSI X58 Motherboards

Regeneration

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Linked below is a database of modified BIOSes for MSI X58 motherboards patched with the latest microcode (0x1F for Westmere, 0x1D for Bloomfield) against Meltdown and all variants of Spectre. Make sure the operating system is also updated to be fully protected from speculative execution side-channel vulnerabilities (CVE-2017-5715, CVE-2017-5753, CVE-2017-5754).

While most of Nehalem CPUs received a new microcode from Intel, there is an early stepping (C0) that hasn't and therefore still vulnerable at the moment. However, these very few CPUs will also benefit from increased security and stability due to more recent microcode. In addition, the ROMs feature TRIM support for SSDs in RAID0 and extended CPU compatibility table for all motherboards.

Unofficial ROMs! use at your own risk.
Other useful downloads
Some 3DMark and AIDA64 benchmark results are available here.

All of ROMs are mirrored in this location just-in-case.
 
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Regeneration

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Updated all ROMs with more recent microcode for CPUID 106A4 and TRIM support for SSDs in RAID0.
 

jcastroviejo

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Thank you very much for these mod BIOS.  I have an MSI X58 Pro-E (MS7522), Which is the diference between SLI or not SLI mod BIOS ? I suppose all MSI X58 Pro-E are SLI all ones.
With this mod BIOS, is it posible boot from a Samsung SM951 AHCI ?  Can I flash an IMT board with this mod BIOS ?

Thank you again
 

Regeneration

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SLI vs non-SLI is a different motherboard model. Vendors pay Nvidia royalties for the use of SLI. Crossflashing might work.

Can't boot on X58 from PCIe storage devices without 3rd party boot loader or special O-ROM.

https://www.win-raid.com/t3286f50-Guide-NVMe-boot-for-systems-with-legacy-BIOS-and-UEFI-board-DUET-REFIND.html
 
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