I'm going to keep this running change-log of the BIOS updates for the x58 SLI motherboard (132-BL-E758-A1 and 132-BL-E758-TR).  I was inspired to compile all this information when I recently had a need to see the changelog of older BIOSes for my own x58 SLI and I discovered EVGA no longer had the changelog or all the old BIOS versions in the Download Center.  The following information has come from a ton of searching on the current and archived forums (as well as some help from KMoore4318, linuxrouter, HalloweenWeed). I've tried my best to find all of the BIOS versions for E758 that ever existed but chances are a few slipped through my investigation.  If you find ones I've missed, please post any info you have on them and I'll update this post.  I will also update this as new BIOSes are released.  If I haven't provided a particular link (BIOS version or format of version) it's because I couldn't find it and again, if you have a valid link for it, please help expand the info in this thread and post it.

The Discussion link goes to the original post about the BIOS's release, the download links for each are provided in all available file formats.

Credit for this idea and format design goes to the similar thread BIOS Changelog for X58 3X-SLI Classified Limited Edition (E759) and it's author Davabled.  I myself did all the work compiling it and putting in the formatting you see here.


September 02, 2011
83 Official           Discussion     Download .iso     Download .bin   
83 Updates:
Updates CPU Microcode
Improved CPU Support

April 22, 2011 (Release date in Download Center: August 05, 2011)
82 Official           Discussion     Download .iso     Download .bin
82 Updates:

• VT Fixes
• Fix spacing on Intel RAID Rom Text

April 13, 2011
81 Official           Discussion     Download .iso     Download .bin
81 Updates:

• Fix cold reset when VT is enabled
• Adds screen clear before invoking option rom
• Includes Intel RAID Rom to 10.5.0.744
• Includes CPU Microcode to version 13
• Includes Intel AHCI Rom to 1.07.10
• Includes JMicron ROM to 1.07.25
• Includes Realtek PXE Rom to 2.39

January 31, 2011
78 Official           Discussion     Download .iso     Download .exe     Download .bin
78 Updates:

• Updates RAID ROM to version 8.5.0.1030

November 01, 2011
77 Official           Discussion     Download .iso     Download .exe     Download .bin
77 Updates:

• Adds IOH Clock Skew, tWL and tREF options to BIOS

July 07, 2010
74 Official           Discussion     Download .iso     Download .exe     Download .bin
74 Updates:

• Corrects 15x uncore multi shown as 16x in BIOS with Intel 980X

June 24, 2010
73 Official           Discussion     Download .iso     Download .exe     Download .bin
73 Updates:

• Added TRL setting to assist with memory compatibility while overclocking

May 27, 2010
70 BETA              Discussion     Download .iso     Download .exe     Download .bin
70 BETA Updates:

• Improved Memory Compatibility
• Improved Memory Overclocking

May 12, 2010
64 Official           Discussion     Download .iso     Download .exe     Download .bin
64 Updates:

• Adds 1.5x uncore support for B1 CPU
• Adds number of GPUs detected at bootup
• Adds RC/AC setting in memory timings

April 23, 2010
59 Official           Discussion     Download .iso     Download .exe     Download .bin
59 Updates:
Updates CPU Microcode

• Corrects issue with boot screen hang on some RAID 0 SSD setups
• Extreme cooling mode improvements when using a 6-core CPU
• Supports reduction to 4-core or 5-core for 6-core CPUs

March 31, 2010
51 Official           Discussion     Download .iso     Download .exe     Download .bin
51 Updates:

• Updates VT to correct issue with not enabling on specific setups.
• Corrects issue where memory timings change after S3 resume on some configurations.

March 10, 2010
49 Official           Discussion     Download .iso     Download .exe     Download .bin   
49 Updates:

• Removes shutdown action when enabling Virtualization Technology
• Sets ICH Voltage to 1.1v as Default

February 04, 2010
44 Official           Discussion     Download .iso     Download .exe     Download .bin   
44 Updates:

• Supports 32nm Desktop CPUs
• Added "Turbo Performance" option (may boost performance if enabled)
• Fixes 1866MHz Memory Ratio

January 13, 2010
43 BETA             Discussion     Download .iso     Download .exe     Download .bin   
43 BETA Updates:

• Supports 32nm Desktop CPUs
• Added "Turbo Performance" option (may boost performance if enabled)

November 30, 2009
SZ2Z Official  Discussion     Download .iso     Download .exe     Download .bin   
SZ2Z Updates:

• Added "Reserve RC for Bridge" - Enables resources for 5 VGA's.
• Added High Precision Event Timer
• Disables PS2 keyboard in device manager if no PS2 keyboard present

November 9, 2009
SZ2X Official  Discussion     Download .iso     Download .exe     Download .bin   
SZ2X Updates:

• Adds support for 2TB Partitions (DATA)

October 23, 2009
SZ2U Official  Discussion     Download .iso     Download .exe     Download .bin   
SZ2U Updates:

• Increased Shadow Memory in DOS for PXE
• Improved USB Support

October 5, 2009
SZ2S Official  Discussion     Download .iso     Download .exe     Download .bin   
SZ2S Updates:

• Restores Bootup Logo
• Maximum Payload for PCIE
• SMART Fan Temperatures from 0 to 100C

September 18, 2009
SZ2R Official  Dicussion     Download .iso     Download .exe     Download .bin   
SZ2R Updates:

• Improves Bootup Bclock
• Adds B2B CAS Delay

August 28, 2009
SZ2P Official  Discussion     Download .iso     Download .exe     Download .bin   
SZ2P Updates:

• Updates smart fan function between low and high threshold
• Increase high temp threshold lower limit for smartfan
• Improves bootup BCLCK
• Turbo mode bug fixed
• USB option display issue corrected
• Changes default clockgen PCIe mode
• Fixes VCore change from S3 Resume

August 8, 2009
SZ2L Official  Discussion     Download .iso     Download .exe     Download .bin   
SZ2L Updates:

• Smartfan is listed by temp they are adjusted to
• PXE fix with RAID enabled
• Improves bootup BCLK
• Improves 24GB support
• Smartfan improvements

SZ2F    (Found references to it, but no archived thread/info available)
SZ2F Updates:

• S3 Resume Improvements

May 5, 2009
SZ2E Official  Discussion     Download .iso     Download .exe     Download .bin   
SZ2E Updates:

• Improves support for Intel Xeon CPU's
• Fixes Smart Fan S3 Resume
• Improves Smart Fan Controls
• Shows CPU Target Frequency in BIOS
• Shows Memory Target Frequency in BIOS
• Adds Overclock Recovery Feature

March 27, 2009
SZ27 Official  Discussion     Download .iso     Download .exe     Download .bin   
SZ27 Updates:

• Adds CPU Clock Skew Feature*
• Updated CPU Microcode
• Fixes S3 Resume Bug if Uncore Not Equal to 2x Memory Speed
• Improves Auto Adjustment of Memory Low Gap

March 4, 2009
SZ21 Official  Discussion     Download .iso     Download .exe     Download .bin   
SZ21 Updates:

• Added XMP Memory Feature
• Fixed Virtualization Bug

February 13, 2009
SZ1N Official  Discussion     Download .iso     Download .exe     Download .bin   
SZ1N Updates:

• Improved S3 resume when using Turbo Mode
• Fixed S3 Resume CL4 Report in E-LEET/CPU-Z
• Improved Memory Compatibility
• Added MCH Strap for Tweaking Overclock/Performance
• Automated Memory Low Gap Adjustments to Maximize Memory Size in 32bit OS

January 19, 2009
SZ1G Official  Discussion     Downoad .iso     Download .exe     Download .bin   
SZ1G Updates:

• Improved USB Device Compatibility
• Improved SmartFan Compatbility
• Improved Memory Overclock
• Memory Low GAP Option (may only be needed for future device compatibility)
• Power LED now changes back to Green Color while S3 Resume

December 29, 2008
SZ1C Official  Discussion     Download .iso     Download .exe     Download .bin   
SZ1C Updates:

• Improved QPI Frequency Overclock
• Improved Memory Overclock
• Improved S3 Resume
• Improved 965 Multiplier Support
• Improved System Bootup at High overclock (system will post slightly slower at higher frequencies)

SZ1B
This BIOS seems to have caused major issues from archived posts and the original post has been removed.  In addition, the .iso/.bin/.exe files have been removed from FTP unlike the other old BIOS files.
 
December 16, 2008
SZ1A Official  Discussion     Download .iso     Download .exe     .bin not available via FTP
Discussion was edited by EVGATech_JacobF 10 days after the original post was made to only point to a thread for SZ1B that now no longer exists.
SZ1A Updates:

• Adds support for 2:10 memory divider (1600MHz)
• Enables 1333MHz and 1600MHz memory support on all retail CPU's (920, 940, 965)

SZ1AB1
I was not able to find anything about this BIOS in the archived forum.  However, a google seach found the .bin for it.
Download .bin
I don't know if it's a trustworthy source or not and take no responsibility for anything happening to anyone or anyone's motherboard who flashes to that BIOS file.
 
December 5, 2008
SZ19 Official  Discussion     Download .iso     Download .exe     Download .bin   
Discussion was edited by EVGATech_JacobF 6 days after the original post was made to only point to a thread for SZ1A that now no longer exists.
SZ19 Updates:

• Improves PCIe Compatibility

January 5, 2008
SZ18 Official  Discussion     Download .iso     Download .exe     Download .bin   
Edited by EVGATech_JacobF 5 days after the original post was made to only point to a thread for SZ19 that now no longer exists.
SZ18 Updates:

• Updates CPU Microcode
• Updates JMicron controller
• Fixes rare issue of "F4" error on post

December 1, 2008
SZ17 Official  Discussion     Download .iso     Download .exe     Download .bin   
Edited by EVGATech_JacobF 4 days after the original post was made to only point to a thread for SZ18 that now no longer exists.
SZ17 Updates:

• Enhances overclocking when using specific memory modules
• Adds ability to Enable/Disable onboard Audio
• Resolves S3 Resume bug with specific setups
• Adds extra memory settings

November 26, 2008
SZ15 Official  Discussion     Download .iso     Download .exe     Download .bin   
SZ15 Updates:
Updates CPU Micro Code

• Fixes "ACHI BIOS" not installed error
• Fixes S3 Resume when overclocked
• Fixes boot up issue with high VTT voltage

November 19, 2008
SZ14 Official  Discussion     Download .iso     Download .exe     Download .bin   
SZ14 Updates:

• Enable OC profiles in BIOS, now you can save/load up to 8 profiles.
• Fixes bug with RAID on ports 4 and 5.
• Enabling Dummy O.C now disables C1E/EIST
• Fixes issue where system will not boot with a VTT voltage over +400mV.
• CPU PLL now goes lower than 1.3v.
• Enabled CL5 and TRAS 15.
• Now pressing insert before power on automatically loads Safe Defaults (PS2 only)
• Improves Compatibility with EVGA E-LEET

November 18, 2008
SZ13 Official  Discussion   
This post is now for E758_SZ14 but from the RE: posts to it was originally for E758_SZ13.  Couldn't find change log for SZ13 intact.  NOT available via FTP.

NOTE: I could not find any older BIOSes than SZ13.  This doesn't necessarily mean they didn't exist!

Hey, you really put a lot of work into that.  Kudos.  You deserve a BR!
 
Also, the oldest BIOS would not have a changelog, as there were no changes made.
 
EDIT: Congrats on your first BR!
You know they're worth cash toward an EVGA purchase, right? (If you can get the EVGA site to allow your CC.)
 
EVGA bucks

Glad to see you were able to get this changelog up.  Nice job and well-deserved on the Blue ribbon!

burning_kittins

Hey thanks! i have not updated my bios since SZ2X i think... what is the most recent and safest one to update to?

Kittins 82 has been rock stable for just about everybody.
Lately there has been a couple of failures W/83, one was just very recent and reported loosing cores!
So unless you are about to upgr to 990x or something, I'd suggest 82. I've been running it without a hiccup for half a year now.
 
However, I see you have OCZ mem; no guarantees that you won't have trouble W/those if you change BIOS. And don't forget, you need to set your VTT offset 100 lower with newer BIOS.

The BIOS revision comes up on the first BIOS screen, the one that says press delete to enter setup. If you time it just right, you can press pause and freeze the screen there (this works better W/PS2 kybd). It is about the third line down. It is the number just after "release" or "rel.", and begins with IX58 or E7xx where 7xx is your board part number, for instance mine used to say rel. # IX58SZ2Z and we call that SZ2Z. Dual-digit BIOSes like 73 look like this: IX58xx73, where xx is the last two digits of your board#; for example if you have E760 and BIOS 63 it would say "IX586063;" -OR- they say "IX58SZxx" where xx is the 2010 or later BIOS revision number, 43 or higher. Now mine says "IX58SZ82" and that is BIOS revision 82. Some ppl like to load AIDA64 (Everest) to read it in Windows. The BIOS chip could contain any BIOS so I wouldn't trust the sticker for BIOS revision # since it is a flash memory chip, it could contain any BIOS. Often on these forums ppls mistakenly refer to the revision as the version number, it doesn't help that Everest calls it version also. The Everest image shown below was provided by KMoore4318:



Also, don't use BIOSes 43 thru 75. If you read the thread(s) you will see ppls had many problems with them. I recommend 82, that's what I am using.
You need to get your BIOS set before your OC, bc flashing your BIOS can change your OC results/settings.

Halloween said to avoid 83 and mentioned the cores issue like you describe, but said that he's been running 82 stable for a long time.

spacemanbiff
Hey guys, I see this thread is about a year & a half old, but I just found out that my somewhat recently acquired 758-A1 mobo has Release Number IX58SZ14, the 2nd one ever, LOL. :D Do you guys figure I should flash it to 82, or just leave it where it is?

 
I'm now running on 82 and mine was nearly as old as yours once. There are a large number of changes and increase in options from the early BIOS versions to the late ones. Some people have had success with 83 and some have had issues. I think the overall thought it use 82 unless you need the increased CPU support that came with 83.
 
I've found update using a USB flash drive is the easiest and it's method is described here:
http://forums.evga.com/tm.aspx?m=15265

OP, thank you for posting this. I'm viewing and posting this almost a year after the last post, but that's because this thread is simply awesome. It eased my worries to learn that VT is addressed in some of the later BIOS updates since I'll be using the Android SDK and emulator on my Core i7-920 and EVGA X58 E758 board. Why upgrade when this system can keep up with mid-level PCs today? The only thing I miss is SATA 6Gb/s support for latest gen SSDs. I'm still rocking this system with a GTX 680, 12GB of RAM, SSD raid, and HDD raid.
 
Your post was invaluable and easy to find with a Google search. Again, thanks. And Kudos!