Acer BIOS problem

I just upgraded my AcerPower Sx PIII 800Mhz processor socket 370 to a PIII 866 Mhz.
When i restart my computer after replacing the new processor,the startup displaying this BIOS error message,
0060 CPU BIOS update code mismatch
0006 Equipment configuration error
Press CTRL+Alt+Esc to enter setup or F1 to continue.
If press F1 the sytem just boot into my Windows 98 normally.
My Acer BIOS version 4.40 and SMBBIOS version 2.3
The BIOS detected my new Processor speed.
Please help to solve this error message in the startup.
Thank you