DOS Flash Utility

Perform the following steps to use the DOS Flash Utility:

  1. Press F2 during boot to enter the Setup Menu.
  2. Select Boot Menu to modify the boot priority order, for example, if using USB HDD to Update BIOS, move USB HDD to position 1.
Boot Priority Order

3. Execute the IFLASH.BAT batch file to update BIOS (Read xxxxx.fd to Memory).

Insyie Flash Utility for InsydaHZO

Iters Jon 1.11


File loadlng 100 *

Currnnt BIOS verslon: WB.18.IW Hb« BIOS wersIon: UM 7»

4. In flash BIOS, the message Please do not remove AC Power Source displays. NOTE: If the AC power is not connected, the following message displays.

C : \CLS0Ö20ftsCL50B28fl> I f lash

C:^LSe8ZaftNCL5flllZm>flAshlt ICL58HM. fd 'b "Te Uarnnlng: No AC power connect


Plug in the AC power to continue.

5. Flash is complete when the following message displays.

File Icktdimj 1MB *

Current BIOS version: UB.18.184 Nee BIOS version: UB.20

Updating Block et »IIUUUU Flesh complete t

6. Shutdown or reboot base on iflash.bat command.

WinFlash Utility

Perform the following steps to use the InsydeFlash Utility: 1. Double click the InsydeFlash executable. The InsydeFlash program begins updating the BIOS. IMPORTANT:Do not turn off the computer during the update process.

Unlockhd Exe

2. When the upgrade finishes successfully, close all applications and reboot to complete the upgrade.

Remove HDD/BIOS Utility

This section provide you with removing HDD/BIOS method: Remove HDD Password:

When the user keys in the wrong password three times, the system reports the following error code to user.

To unlock the HDD password, perform the following steps: 1. Press Enter to display the Select Item screen.

Unlock Hdd

2. Select Enter Unlock Password and press Enter. An Unlock Password displays.

Enter Unlock Password With Key
  1. Make a note of the key, 76943488 in the example.
  2. Boot up the system and open a DOS prompt.
  3. Enter the UnlockHD.EXE command and input the key to create an unlock code. Make a note of the result, for example 46548274.
  4. Reboot and enter the BIOS by pressing F2 when prompted.
  5. Go to the Security menu and select Set Hdd Password (see "Security" on page 28).
Acer Aspire 7520 Unlock Bios
  1. Enter the unlock code generated by UnlockHD.EXE as the current password, 46548274 in the example, and complete the New Password and Confirm fields to create a new HDD password.
  2. Save and exit the BIOS to complete the process.

Removing BIOS Passwords:

If you key in the wrong Supervisor Password three times, System Disabled displays on the screen. See the image below.

Bios Acer Aspire 4330

To reset the BIOS password, run BIOS_PW.EXE as follows:

  1. Key in bios_pw 14452 0
  2. Select one string from the list.

C:\W1 N DOWS\system3 2\cmii.exe




Hiul-uiuft Ulnduus KF EUc±-aiull 5.1 <C> Cupv^iylit 1780 2901 Microsoft

.2630] Corp.


G = \Docuiiioik Ls dud Get t iny ¿¿\Mij4>d =


D = \tliios uw 14452 fl I1, unlockt, _exe ul.kJ i July 199"?


D =

3. Reboot the system and key in the selected string (qjjg9vy, 07yqmjd etc.) for the BIOS user password.

Aspire 4540 Reset Bios

Cleaning BIOS Passwords

To clear the password, perform the following steps: 1. From a DOS prompt, Execute clnpwd.exe d:\Clnpwd>clnpwd flCFR Clean Password Utility VI.00 Press 1 or 2 to clean any password shown as below l.tJser Password 2.Supervisor Password

Clean User Password Successfully!

2. Press 1 or 2 to clean the desired password shown on the screen. The onscreen message determines whether the function is successful or not.

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