| Scenario | Recommendation | | :--- | :--- | | Running an old Celeron G540 with no issues | | | Upgrading to i5-3470 or i7-3770 | Must update to A18+ (3010) or A22+ (7010). | | Adding 1600MHz DDR3 | Update – older BIOS locked RAM to 1333MHz. | | Experiencing random USB dropouts | Update – A20/A29 fixed USB 3.0 stability. | | Planning to install Windows 11 | Don’t bother – MIH61R has no TPM 2.0 or Secure Boot (only legacy). Use Rufus bypass instead. |
Locate the BIOS category. Download the latest .exe file (commonly version A04, A08, or A10 depending on the exact model variant). dell mih61r mb 100971 bios upd
Alternatively, in Windows, press Win + R , type msinfo32 , and press Enter. Preparing for the BIOS Update (Crucial Steps) | Scenario | Recommendation | | :--- |
The system will automatically restart and begin the flash process. during this time. Option 2: Update via USB (F12 Menu) Format a USB drive to FAT32 . Copy the BIOS .EXE file to the drive. Plug the drive into the OptiPlex 390 Go to product viewer dialog for this item. and restart. Tap F12 at the logo and select BIOS Flash Update . Select the file from the USB and follow the prompts. Dell BIOS and UEFI Update Download and Installation Guide | | Planning to install Windows 11 |
If your system works perfectly with your current hardware, do not update the BIOS . Only update if you need specific fixes or hardware support.
: If your system uses BitLocker encryption, you must suspend protection in the "Manage BitLocker" settings before updating to prevent being locked out of your data.