Wrong BIOS Firmware Flashed on Lenovo LOQ 15APH8—Can I Recover It?

If Lenovo’s firmware update utility supports recovery from a USB drive or the BIOS menu, you may be able to reinstall the correct version without replacing the board. Use the exact model and serial number, and triple-check the file before flashing. Do not force a ROM intended for another model or revision; a failed or mismatched flash can make the machine unbootable.

The claim that BIOS updates must be installed from Windows is not generally correct. Many manufacturers provide bootable or BIOS-menu-based update methods, although the specific Lenovo model may limit which method is available. Because this is firmware work, check Lenovo’s official instructions or have an authorized technician verify the board before flashing anything.

I would go back to the repair shop and ask them to document exactly what firmware they installed and correct it at their expense. If they knowingly flashed firmware for a different laptop, that is a repair error. Avoid experimenting with random BIOS files until you have confirmed the model and version, because the wrong recovery attempt could make the situation worse.

If the laptop can enter BIOS setup, load the default settings first and check whether the storage mode, boot mode, and other hardware settings look correct. You can also try disabling Fast Boot. Since Linux starts from USB, the motherboard is not necessarily dead, and the ACPI error could involve firmware settings or Windows rather than a completely incompatible BIOS.

First verify the exact BIOS version, machine type, and serial number rather than assuming the firmware is wrong. Lenovo has BIOS packages covering both the LOQ 15APH8 and 16APH8, so the model name alone may not identify the problem. Download firmware only from Lenovo’s support page for your exact machine and compare the package details carefully.