phlash16 BIOS upgrade from USB generates Memory Mgr error

August 20, 2012 at 17:14:53
Specs: Windows XP
I am upgrading the BIOS on my Acer TravelMate4230, from v3.33 to v3.60.
Reason: so that additional RAM gets detected.

Here is what I have done so far:
I have created a bootable USB stick using HP_USB_Boot_Utility.exe
I have copied the new BIOS v3.60 and flash utility files (from Acer website) onto the USB stick using drag and drop
I have adapted the current boot order so that it starts with the USB key
I have successfully booted the laptop from the USB stick and get a DOS prompt C:\>
I can enter DOS commands, such as dir, copy, cd, etc - so that works
I have no *.SYS file on the USB stick

Here is where I have trouble:
Problem 1: When I enter a command to backup the current BIOS
C:\>phlash16 /bu
it replies with: "Cannot flash memory if Memory Managers (e.g. HIMEM) present"

What does it mean? Why can I not backup the current BIOS?
(My problem being that I could not download that exact version from anywhere)

phlash16 /bu error msg because memory manager

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August 20, 2012 at 18:05:51
Where did you get the DOS system from for the USB Stick

HIMEM was a DOS memory manager that uploaded from Autoexec.bat. If you have an autoexec.bat delete it as wels as config sys.

The only visible DOS files on the USB stick should be

If you are using the DOS that came with Windows ME then that has HIMEM built into command,com and you will need a pure DOS system.


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August 21, 2012 at 04:54:01
The Acer TravelMate4230 accepts a max of 4GB RAM, 2GB per slot. If you're running XP 32-bit, only 3-3.5GB of that 4GB will be recognized. And if the graphics has no dedicated memory of it's own, it will take what it needs from that 3-3.5GB. In other words, if you've installed the 4GB max & only 3GB or less is being recognized, nothing is wrong & there's nothing to be fixed by updating the BIOS.

However, to update the BIOS, all you need to do is download the the BIOS file ( from the Acer site, unzip it, then run flash32.exe from within Windows. No USB stick is required.

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