So a while back i destroyed my processor by taking it out and accidentally bending the pins.
Long story short it's totaled and i took it to a pc repair shop, he told me what i already knew and said to go ahead and to try to find one online.

So i've been looking for the past 2 hours with no results. The main problem is my motherboard socket type is an AM2 and i cannot find a cpu that is socket type AM2. I can only find AM3's.

Now i have heard that AM# cpu's are backwards compatibly meaning that they can work on AM@ motherboards, thing is you need a BIOS update on your motherboard from it's manufacture for it to work.

So you can see i am in a bind and i don't know what to do. I have no clue where to find the BIOS updates or whether An AM3 cpu really does fit an AM2 motherboard.
I need some major help here because i really miss my pc :<

Specs:
motherboard: pegatron m2n78-la Socket AM2
CPU: AMD Athlon II x4 620 quad core Socket AM (i guess that's what it was, not sure)

Tl;dr
I can't find the right processor to fit my motherboard.