Here is my suggested method for flashing the BIOS to the latest without having to purchase an inexpensive CPU. Contact your local computer repair shop (A real computer reapair shop, the geeks at BB probably can't help here...) and find out what they will charge to flash your BIOS. A small local shop is far more likely to have a CPU available for that kind of thing (from my experiences) and should charge a minimal fee for the service.
The alternative option of course is to buy a used CPU or even a new single core sempron CPU for about $40, flash the BIOS and then sell the CPU on Ebay
Hope it helps
There are no computer stores in my area
as well I litterly have no money.