Computer Hardware Tech Tips

Dell Precision M6600 (and BIOS Update A06)

Over the summer, I acquired an exchange upgrade from my Dell Precision M6400 to an M6600. I got a chance to disassemble and replace the mainboard in this new system, but didn’t get around to posting photos and comments I had about the new hardware. (Post a comment below if you want the pictures.)

My experiences with the M6600 were not without headaches. Issues ranged from a keyboard that locks up if the backlit was on during boot to drives not waking up when the computer resumed from S3 standby due to the Free Fall Sensor not waking up with the system.

Well, Dell decided it was a real problem with the BIOS and Embedded Controller and released a BIOS (uEFI firmware to be correct) update to the system on 02 OCT 2011. Here’s the official changelog:

1. Addressed some express cards fail to be detected issue.
2. Addressed Hard Drives encryption issue in ATA mode.
3. Addressed some keyboard with USB Hub not accessible during POST.
4. Fixed issue where disabling webcam stops microphone from working.
5 . Fixed issue where battery temperature sensor throttling CPU at high temperature when external power.
6. Fixed issue where Video memory size limited to 256MB in WinXp.
7. Fixed issue where Free Fall Sensor protection doesn't work after resuming from S3.
8. Fixed issue where TPM measurements were not correct when authenticating via PBA.
9. Updated Intel ME Firmware to
10. Updated to the 1.3.76 version of the Intel PXE OROM.
11. Added support for the new Nvidia graphic optimus keys.
12. Update Intle SandyBridge Client PPM Reference Code to version 1.4.0.
13. Update Intel Microcode patch to version P_12.
14. Fix Turbo Boost function abnormal.

1. Please note that if the A02 or before A02 BIOS is currently installed on your system,
you must first update to A03 BIOS and then flash to the latest A-rev BIOS.

I have updated to this latest revision from A04 and it has been buttery smooth, even fixing a SSD stuttering issue that seemed to plague my everyday usage of the laptop.


A few more notes about the Dell M6600 hardware:
– The graphics card is MXM
– The “BIOS” is actually uEFI with BIOS extension.
– There are about 4 unlabeled screws underneath and a flimsy plastic snap you need to remove to service the system. Improperly removing these will destroy your chassis.



M6600 A06 Firmware Package Contains the following firmware revisions:
– System BIOS: A06
– Embedded Controller: X23
– Gigabit Ethernet: 0.D.3
– Legacy Video OROM: 2089.V.11
– GT1 Legacy Video OROM: 2089.V.11
– GT2 Legacy Video OROM: 2089.V.11
– Legacy RAID OROM:
– Intel AntiTheft:
– Intel Management Engine Update:
– ACPI OS Support:

7 replies on “Dell Precision M6600 (and BIOS Update A06)”

I did a clean install on my M6600 and the Device manager is reporting that the Network Controller is not installed. Can’t seem to find which driver I am missing. Any ideas?

Thanks for the write up. I have a Black magic intensity Shuttle, it’s an HDMI to usb 3.0 capture card, I have it working fine on the usb 3.0, but I need to add a second one I dont think it will work using an Express Card to usb3.0 adapter.. I dont need to record, just get the video in for use in Resolume Avenue software.
It has a QM67 chipset with 6 Gbit/s, 2 Ports & 3 Gbit/s, 4 Ports. From what I was told by Dell, the usb3.0 is on one of the 6 Gbit/s and the express card is on the other 6 Gbit/s, that should be enough bandwidth for a second shuttle but nothing works when running off the adapter.. Can you think of any way to another USB 3.0? Would be open to sacrificing anything like the express card or..? Sorry it’s such a crazy inquiry.. I just dont understand why it wouldnt run off the adapter, that should have 5 gbps..

Any ideas or help would rock.

Thank you very much!!!
I had X23 BIOS on my old Dell M6600 for years, unable to upgrade to A-rev BIOS till now when I noticed your note:
“Please note that if the A02 or before A02 BIOS is currently installed on your system,
you must first update to A03 BIOS and then flash to the latest A-rev BIOS”.
Now I have bios A18 ๐Ÿ™‚
The advices I found which were not helpfull at all were:
1. Try via USB DOS.
2. Turn off virtualization.

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