Gen 3 I5 CPU for Aspire X3990

Hello. I have an Acer X3990 running off a Pentium G630 processor. I know this PC is old now, but it's still functional. However, with a G630 CPU, it is slow, so I ordered an I5-3470 assuming this would be compatible. When I add this CPU and switch on, I get 4 short beeps. I know the RAM is 100% okay, so I am assuming that the X3990 won't accept a 3rd generation I5 unless the BIOS is updated. If that is correct, the issue is that the last BIOS update available for this system is P01-B2. I already have that. So my queries are (1) are the 4 short beeps related to installing a generation 3 I5-3470 (2) Can the BIOS be updated to accept intel 3rd gen CPUs? Will a BIOS update using the PO1-A2, or P01-A3 BIOS work, or will that result in a destroyed mobo? Thank you.

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philetus

If you had bought one of these, you would be fine.
I don't think believe is anything you can do to make the one you bought work.

"CPU Intel Core i5 2500 3.3G 6M 1333 95W K-0 , LGA1155, Sandy Bridge" Acer part number KC.25001.CI5
"CPU Intel Core i5 2400 3.1G 6M 1333 95W K-0 LGA1155, Sandy Bridge " Acer part number KC.24001.CI5
"CPU Intel Core i5 2300 2.8G 6M 1333 95W D-2 LGA1155, Sandy Bridge, Quad Core" Acer part number KC.23001.CI5

I don't think believe is anything you can do to make the one you bought work.