I was able to upgrade my HP Pavilion G7 that originally came with an i3 2320M to an i7 2640M and it didn't require any flash of the BIOS. It was basically drop and go. I found out that HP used the same Sandy Bridge motherboard chipset between their i3, i5, and i7 variants for that year's G7 series so it was no problem. I was only comfortable doing it after disassembling it and checking out the cooling which is a good design. Temps are only a few degrees C above what they were with the i3.
Your challenge is finding out if the motherboard BIOS will accept. Like another here said, it appears that laptop only came with an i3 or lower Pentium B-series CPU (think Celeron). I can find no information on the motherboard of that laptop for what...