Asus P5B Deluxe BIOS

Posted by 9 December, 2006 |

Last Updated: September 01, 2008

Going to Asus’s downloads website and then finding the appropriate download is a slow and somewhat painful process so I have setup direct download links to all BIOS versions of Asus P5B Deluxe. The list is now arranged as the latest BIOS version on top and so on; you don’t have to scroll down anymore to get the latest BIOS version.

I am just linking to the BIOS versions available on Asus’s servers. I will not be responsible for any damage or loss that might be caused due to the BIOS upgrade procedure. If you have not done BIOS upgrade before then I suggest you consult someone who can do it properly & here’s a warning from Asus; consider it from my side too.

Please leave a comment if you like the effort =)

Please note, BIOS update is only recommended when experiencing technical difficulties with your system, And is not recommended to be performed regularly.

Moreover, due to the nature of BIOS update, there is certain level of dangers involved. BIOS update must be performed with extreme caution . During BIOS update process, your system must be maintained without interference or power loss to prevent unexpected damage.

In case of BIOS update failure, please follow instructions in your User’s Manual for guidelines on BIOS recovery via CrashFree BIOS. In the event that BIOS recovery is not recoverable via CrashFree BIOS, please contact your place of purchase for further assistance on BIOS recovery.

BIOS Releases for Asus P5B Deluxe

  • P5B Deluxe BIOS version 1236 BETA – 838.47 KB [Latest]
    Release Date: August 05, 2008
    1) Support new CPUs

    Core 2 Quad Q9400 (rev.R0,2.66GHz,1333FSB,L2:12MB,4 cores)
    Core 2 Quad Q9550 (rev.E0,2.83GHz,1333FSB,L2:12MB,4 cores)
    Core 2 Quad Q9650 (rev.E0, 3.00GHz,1333FSB,L2:12MB, 4 cores)
  • P5B Deluxe BIOS version 1232 BETA – 835.26 KB
    Release Date: April 18, 2008
    1) Support new CPUs
  • P5B Deluxe BIOS version 1226 BETA – 828.27 KB
    Release Date: November 30, 2007
    1) Fix CPU ratio will not reset after load BIOS default
    2) Enable support for N/2 Ratio option
  • P5B Deluxe BIOS version 1223 BETA – 825.7 KB
    Release Date: November 13, 2007
    1) Fix FSB speed issue after adjusting CPU ratio
  • P5B Deluxe BIOS version 1221 BETA – 825.9 KB
    Release Date: November 05, 2007
    1) Support new CPUs
  • P5B Deluxe BIOS version 1219 BETA – 825.9 KB
    Release Date: October 31, 2007
    1) Support new CPUs
    2) Finetune CPU Voltage Low Limit
    3) Finetune Q”Fan control code for chassis Q”Fan
  • P5B Deluxe BIOS version 1216 BETA – 816.19 KB
    Release Date: August 16, 2007
    1) Finetune CPU temperature detection algorithm
  • P5B Deluxe BIOS version 1215 BETA – 816.17 KB
    Release Date: July 13, 2007
    1) Enhance memory compatibility under FSB1333 mode
  • P5B Deluxe BIOS version 1212 BETA – 816 KB
    Release Date: July 09, 2007
    1) Add new CPU uCode to support new processors
    2) Revise SLP 2.0 rule
    3) Enable support for SATA hot plug function under AHCI mode
    4) Fix after downgrade CPU ratio, the Conroe L frequency not correct under ASUSCPU
  • P5B Deluxe BIOS version 1101 – 809 KB
    Release Date: April 04, 2007
    1) Add new uCode to support new CPU.
    2) Fix system won”t complete POST with GV-MVP/RZ2(TV tuner) connected and power on before motherboard.
  • P5B Deluxe Release BIOS version 1004 – 804 KB
    1) Enhance memory compatibility
    2) Support CONROE E0 CPU (FSB 1333) – Yey!!!
    **Please update AsusUpdate to V7.09.02 or later prior making this update – I guess for those who like to use Asus Update software**
    **This BIOS does not support roll back to older BIOS – I don’t quite get this one**
  • P5B Deluxe Release BIOS version 0910 – 803.68 KB
    1) Update Jmicron option ROM to 1.06.59
    2) Fix AC Power loss function not correct
    3) Support x4 DIMM
    4) Moidfy Write to Precharge Delay default from 10 to 11
    5) Enable support for EIST under VISTA
    6) Finetune Q-Fan rule
    7) Support SLP 2.0
    8) Fix BBS device string not correct under AHCI mode
    9) Enable Disable USB capability
    10) Support ASUS WIFI-TV card
    11) Revise CPU temperature calculation algorithm for PECI
  • P5B Deluxe Release BIOS version 0804 – 798.12 KB
    1) Support conroe L processor
    2) Update JMicron option rom 1.06.22
    3) Modify CPU fan low limit speed from 800 RPM to 600 RPM
    4) Implement ASUS CGI performance with ATI 1950 graphic cards
  • P5B Deluxe Release BIOS version 0711 – 791.8 KB
    1) Fix DRAM frequency incorrectly display problem under auto, standard and AI N.O.S mode
    2) Add check ATI CrossFire VGA card routine
    3) Add ASUS Cross Graphics Impeller (ASUS C.G.I) feature
    4) Reduce system full reset of times
    5) Patch some VGA card can’t found when NB Vcore value has been set too high
    6) Fix DDR frequency 889 unstable by SPD
    7) Enable support for NVIDIA 7950GX2 cards under recovery mode
    8) Fix CPU frequency not correct when use ES CPU and lock free fuction enable
    9) Fix memory display message not correct under multi-language
    10) Add new CPU Ucode to support Kentsfield B3 stepping CPU
    11) Fix chassis fan 2 speed not correct when fan speed too low
    12) Fix ATI CrossFire can’t work when using with 800FSB Prescott CPU
    13) Enhance Chassis Q-Fan sensitivity
    14) Improve memory compatibility
    ** Please perform CMOS clear after update to this BIOS.
  • P5B Deluxe Beta BIOS version 0706 – 791.4 KB
    1) Enhance CrossFire performance
    2) Enable NVIDIA 7950GX2 display under crashfree mode
    3) Fix CPU frequency not correct when use ES CPU and lock free fuction enable
    4) Fix memory display message not correct under multi-language
    5) Add Kentsfield B3 uCode
  • P5B Deluxe Beta BIOS version 0701 – 787.89 KB
    1) Fixed chassis fan2 may not detect fan speed under ProbII if low spin fan is used
  • P5B Deluxe Release BIOS version 0614 – 787.78 KB
    1) Support DDR2 double side x16 module
    2) Enable support for CPU ratio adjustment on Kentsfield B0 stepping CPU
    3) Enable conroe/kentsfield ratio overclocking higher above default value
    4) Fix CPU Fan profile mode not correct after system shotdown
    5) Enhance memory compatibility for DDR533 and DDR667 modules.
    6) Revise S3 fuction not stable when CPU FSB over 300MHz.
    7) Enable support for OCZ2G8002GK-6400
    8) Fix PCIEX1 will disappear after update beta bios from 0405 to 0507
    9) Fix some lock cpu will show “modify ratio “item in bios(ex:660-SL7Z3 3.6GHT PSC800 2M/EM64T 002)
    10) Fix some lock cpu frequency not correct when lock free fuction enable(ex:660-SL7Z3 3.6GHT PSC800 2M/EM64T 002)
    11) Fix kentsfield L2 cache not correct issue (in bios setup)
    12) Fix SATA configuration select disable and compatible mode, and BIOS still show SATA5 and SATA6
    13) Update ICH8 Raid option ROM from V6.0.0.1022 to V6.1.0.1002
    14) Update Marvell 8001 and 8056 Lan option rom from to
  • P5B Deluxe Release BIOS version 0507 – 785.13 KB
    1) Support Conroe CPU ratio adjustment
    2) Fixed some DDR 800 frequency will show DDR 533
    3) Enhance performance when using NVDIA 7950GX2 VGA card
    4) Fix fail to read files from some ODDs
    5) Fix “Hit ‘DEL’ message display” item function fail
    6) Support Max FSB from 500 MHz to 650 MHz
  • P5B Deluxe Beta BIOS version 0502 – 783.62 KB
    1) Allow FSB setting up to 650MHz
  • P5B Deluxe Release BIOS version 0405 – 789.18 KB
    1) Added auto calculate DDR frequency rule to display DRAM frequency
    2) Supports FSB533 CPU over 3.4GHz frequency under AIBooster
    3) Supports max FSB from 400MHz to 500MHz
    4) Fix AIGear may sometimes show fan speed too low sometimes under normal mode
    5) Revise EIST module
  • P5B Deluxe Release BIOS version 0302 – 787.56 KB
    Initial Release
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December 31, 2006

I just built a new desktop using:
CPU is Intel Core 2 6700 @2.66GHz
4 GB of Kingston DDR2/800 RAM
CoolerMaster 600W iGreen Power Supply
Arctic Cooler Pro 7 CPU Fan

Board came with BIOS Rev 0614, I upgraded to 0804.
I am running Vista RTM and with 0614 I only saw 3 GB of RAM. After bios upgrade I now only see 2GB of
RAM. In BIOS setup there is 4096GB available. I also lost all WiFi capability after upgrade to 0804 (not that I really care).

I am looking for the Rosetta stone for what BIOS setting actually mean to better understand what I am changing and why. Any thought for getting this new system to recognize all 4GB would be greatly appreciated. (FYI: I have Advanced>North Bridge Chipset Configuration/Memory Remap Feature> ENBABLED after I a read a FAQ on the ASUS site)

Posted by gmandolin
January 2, 2007

Sorry for the late reply. I have been busy here lately. I don’t know the solution for your problem but will let you know as soon as I find something about it. :)

Posted by The Patri0t
February 11, 2007

I am running a core 2 duo E6400 on a Asus P5B Delux mobo, O/S WIN VIS Home Prem.
The problem is i cannot get the system to switch off ( fans and everything other than monitor still running), I have sdjusted the power settings to shut down but stilll no change.
I am forced to push the power switch in for 4 seconds in order to shut it down.
BIOS is up to date as is all drivers, just cant get to the bottom of it.
Any suggestions?

Posted by lancerlot
February 17, 2007

lancerlot, have you installed Asus Utility softwares? Are you able to Hibernate the system?

Posted by The Patri0t
March 7, 2007

I also cannot get the power management to work Qfan my arse. Has anyone founf a way to get this to work?

Posted by michael
March 14, 2007

Not really michael…

Posted by The Patri0t
March 29, 2007

I had SAME issue, computer would NOT shut down, and found out the VERY hard way, it was due, to the new BIOS I had in it, having revised the firmare for The Intel RAID contoller. And, the floppy disk I used for install, was older, and had drivers for the OLDER Intel RAID bios firmware, “they have to work together. I had somebody in Scotland, find this out, after months of a battle, and, he posted it, I verified, it, I downloaded the newest chipset drivers, and did a “Make Disk” for the Intel RAID. And, ;-( had to resinstll, using the new floppy, A WIN! It worked, and shut down properly. I posted it in about 10 forums, trying to get the word around. Obviously, It did not get all the way around. I DID put it on the Asus P5B Deluxe forums. Though, it affects more than just that ONE board. EVEN afftects some AMD boards, for same reason. Just not intel chipset doing it, was the Nvid chipset doing the same thing. SO, you now know what to do. A guaranteed fix. AND, you CAN do it without reinstalling, but, you have to get all the files, and put them individually in the right place. AND, I did not know, HOW many places they were in. I used search, and replaced all the ones I found, did not work. SO, REINSTALL. AND WORK.

Good Luck Pard;


Posted by Rob Lundien
April 10, 2007

I was hoping for some of your expert insight into an issue that is just KILLING ME.

I bought a ASUS P5B motherboard. I updated to the current BIOS to 1202. I also applied the driver V1.17.8.1 for the JMICRON fix for RAID.

I have 2 250 GB seagate SATA II drives. I want to make them RAID 1. I know you use the e-sata port on one drive and the other internal RAID SATA port for the other. I can get it to making them RAID 1 and install Vista. No problems there (DVD drive works installing Vista just fine).

Problem is – the LG DVD drive I have is no longer visible through my computer or usable at all after Vista is installed and working as an OS. It looks like the JMicron JMB36X RAID Controller Driver makes any and all IDE devices (like my DVD optical drive) not work.

Help. Is this a problem with the BIOS or the JMICRON driver?

I know I am an idiot for not buying the P5B-E (yes, you can hit me), is there any way I can get this P5B to do RAID 1 and have the DVD working?


Posted by Mike
April 14, 2007

Du musst ein Fachmann sein – wirklich guter Aufstellungsort, den du hast!

Posted by arch
April 18, 2007

I wondered if you guys knew how to disable USB power when the computer is switch off. I use a P5b Deluxe and I don’t want the connected usb devices not to be powered when the pc is off.


Posted by Matthias
April 30, 2007


IDE does not work whit RAID on the PB5. Regardless of if its the J-Micron Intel RIAD. You need a SATA CD.

I started out with a P5B, but upgraded to a deluxe to be able to run Intels RAID which allows RAID5 and using the internal SATA connectors.

I really wonder who tought the J-Micron solution will be usefull and widely used, as you can only hook up a second drive on the external SATA port.

So dont go for the plain P5B if you’re thinking of a permanent RAID setup.

Posted by Bjorn
July 7, 2007

I have an XP media center box using matrix RAID with an 0302 BIOS and the Asus BIOS update tool says there are no updates available – clearly that’s not correct.

I’d like to update the BIOS but comments above seem to suggest that that my machine would no longer boot since the BIOS update would mean the boot-time drivers for the ICH8R would be out of date? How on earth do I update them? Can I do so without a machine reinstall?

Also can people confirm that all of the updates above are cumulative and whether I’ll need to reset the CMOS as indicated by notes attached to 0711.

Posted by Talden
September 17, 2007


When installing the bios om the p5b motherbard for, do you have to install all prior updates before you reach the most frequent updates?

Plz respond

Posted by infotech
November 19, 2007

hi there
i have p5b motherboard with q6600 problem is system switch off by itself when installing os or any prog
before it was having overvoltage error then i have update bios i dont know whats the prob pls help

Posted by moin
February 20, 2011

Nice site ….)

Posted by steertideange
October 20, 2011

This surely makes great sense!!!

Posted by Jesse Dziedzic
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