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OptiPlex 360 380 760 780 960 Xeon LGA 771 E0 1067A Microcode
Modded: OptiPlex 360 380 760 780 960
Not Modded: OptiPlex 755

Chipset Information:
G31,G41 should support 5xxx Series,3xxx Series,45nm,65nm
Q43,Q35,Q45 should support 3xxx Series,45nm,65nm NOT 5xxx Series
(thanks to

Dell does not support this modified BIOS or have any oversight on the changes. These patches are completely unofficial, untested, and unapproved by the manufacturer. They are provided "as is" without any warranties or guarantees from any manufacturers or other entities, including myself. This will void any existing warranties.
Flashing the bios poses a very real risk of damaging your computer. You will be solely responsible for any damage or loss of data that results from flashing or using the patched BIOS.

Mods Details:
Removed LGA775 E0 (1067A Platform 0,4)
Added LGA771 E0 (1067A Platform 2,6)

O360-A07 1067A-771.exe (2.36MB)
O380-A07 1067A-771.exe (3.36MB)
O760-A16 1067A-771.exe (4.29MB)
O780-A15 1067A-771.exe (4.79MB)
O960-A18 1067A-771.exe (4.79MB)

O755: The following is Serg008's SLIC 2.3 bios if you want something modded. Thank you Serg! It does not need a bios mod because it contains more microcode than most.

O755-A22 1067A-771.exe (4.84MB)

All of the above links have since expired. I have attached most of the original files.

Attached Files
.zip   O360-A07 E0 (Size: 1.56 MB / Downloads: 167)
.zip   O380-A07 E0 (Size: 1.86 MB / Downloads: 403)
.zip   O760-A16 E0 (Size: 3.19 MB / Downloads: 150)
.zip   O780-A15 E0 (Size: 3.28 MB / Downloads: 200)
.zip   O960-A18 E0 (Size: 3.27 MB / Downloads: 124)
Many thanks fiend,
You are welcome !!!

[size=undefined]Your Brain [/size]. . . . It's the best tool U can use ! Wink
[size=undefined]Don't FLASH the Bios Mod if You get a Size Alert, You risk a Brick !!! [/size]
Donate to me for my work, click here BDM
Thanks for posting these. I tried out the modded BIOS for the Optiplex 330 and it works great.  Before using the BIOS I received the unsupported processor warning and the fan was very loud.  Now everything is quiet and no more warning.
A big thanks to Serg008 over at My Digital Life forums for adding SLIC back into the 330 BIOS.  The updated BIOS can be found in this thread:
Does this update work with E5450 E0? I have Dell 330 and I heard that there are problems installing E0 revision. Can someone confirm that I can install E5450 E0 after this update?
Before the BIOS update I received unsupported processor message and the fans were running very fast. The update above solved the issue and an E0 E5450 now works fine.
Do You have Dell 330?
Hello from France ! Is it possible to add support for xeon 5345 in Dell 380 BIOS ? Windows works great but I receive the unsupported processor warning. Huh
I'm new here and sorry for my bad english, I am from germany ;-)

I tried my very best with a X3220. It's already a 775 CPU, 65nm Kenfield G0 (SLACT).

Works on a 745, but not on a 755, 760 or 780, with or without BIOS MOD. (All USFF).

I get this "Unsupported CPU installed. System halted" message after turning on the computer...

can someone help me with that? 755 and 780 are not really neccesary (but would be fine), but it would be great if this works on a 760!

And I have a X3323 and a E5410 here (but no stickers yet), is it possible to get them to work, too?
can someone tell me, does  this enable you to use 5xxx cpus in an optiplex 780?

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