Possible way to downgrade bios on p7p55d-e lx

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mastermx

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Hi, I want to bring the bios on my motherboard back to original stock version. I tried doing it using EZflash 2 and it won't let me do it. It won't let me flash an old version. Is there a way around this?

Motherboard is Asus P7P55D-E LX running on windows 10 64bit.
 
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10tacle


Well don't feel alone...a LOT of motherboard owners out there can't roll theirs back either :( . I rarely ever update my motherboard BIOSs unless it's something I need like putting a new chip in it that requires the update. Otherwise as the old cliché goes, if it isn't broke, don't fix it. This is the same reason I don't regularly update my video cards to the latest Nvidia drivers (again, unless a game fix or performance enhancement warrants it).

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10tacle

10tacle

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You need to go to ASUS's website and download an older BIOS of your choosing to a USB drive, then "back flash" it from that USB drive. I've never done this, so I'm not sure if it will work. But try it at least....I can't imagine it would work any different than updating the BIOS forward. The original BIOS is v0304 for that motherboard and dates back to 2009/11/18. Here's the direct link to them all (scroll downward for older BIOS versions).

http://www.asus.com/US/Motherboards/P7P55DE/HelpDesk_Download/
 
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mastermx

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I tried that, but the flashing utility (EZflash2) on the bios tells me that this is an older version, and does not let me flash it.

Also my motherboard is the "P7P55D-E LX" I don't know how different it is from the "P7P55D-E".
https://www.asus.com/Motherboards/P7P55DE_LX/
 
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10tacle

10tacle

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Okay sorry...wasn't sure how you were actually trying to do it. Something happened when I did the search on ASUS's website and kicked me over to the base -E model. I assume you went to the LX model oldest BIOS (v0201).

In any event, some motherboards allow it, some do not. At some BIOS revision point they may have installed a lock on back tracking to an older BIOS (or never allowed it from Day 1). Once it's flashed, that's it unless you *can* back track. Sounds like they locked you out unfortunately. FYI newer/higher end ASUS mobos have a "USB BIOS Flashback" option. I don't see that option on yours.
 
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10tacle

10tacle

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Dec 6, 2008
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Well don't feel alone...a LOT of motherboard owners out there can't roll theirs back either :( . I rarely ever update my motherboard BIOSs unless it's something I need like putting a new chip in it that requires the update. Otherwise as the old cliché goes, if it isn't broke, don't fix it. This is the same reason I don't regularly update my video cards to the latest Nvidia drivers (again, unless a game fix or performance enhancement warrants it).

 
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mastermx

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Yeah I've learnt my lesson. I did it at the time because I thought it would fix my RAM issues. It turned out that the ram issues were just due to my motherboard not being capable of accepting high density chips. Now this bug won't let me change my RAM config. Even the utilities for this motherboard aren't supported in windows 10, so I am pretty much screwed. The reason I am trying to access RAM config is to fix the broken sleep mode on my PC. Guess I'll just have to keep the pc on, or switch it off, no more sleep mode for me. It was arguably the most used function in my PC.
 
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the85darkknight

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Did you lose anything else on the upgrade? I have a RAID, and I am afraid of losing it in the upgrade. Windows started to update without me telling it to go ahead. Has anyone else tried to maintain their RAID on this board?
 
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