Perverted ways to flash the bios?

Question

Iron

Faced here with the problem that the mother ASUS M5A98 LE r2.0 on the stock BIOS does not hold the AMD FX-8320 processor, even if the opposite was stated. Symptoms - outwardly, looking at the disassembled block, everything starts up, but the speaker is silent (is it there at all? In any case, the guys at the English forums connected the speaker separately and he also played partisan) and the display with a frequency of 20 seconds seems to be a black screen and no signal . Separately memory, video, block and peripherals are tested, work and are supported by the motherboard.
Accordingly, the question arose - how to flash the BIOS, because the LE version does not have the “bios flashback” function: insert a USB flash drive, press the special button and wait. I'm looking for interesting ways, even if this motherboard goes out the window tomorrow (back to the store), but still.
I will formulate the question differently: in what ways can I flash (UEFI) BIOS in an emergency? Where to solder, what tools to use? Maybe bitbang like the good old ones? Or maybe this “bios flashback”, whatever it is, can be implemented in a handicraft way?

Answer 1

Mass method:
1. Hotswap on any board with a compatible BIOS chip, open for writing.
2. Using SPIPGM and an old board with an LPT port.
3. Using a flashrom compatible programmer, such as Raspberry PI.
4. Assembling your own programmer based on any MK with hardware SPI.
There is no need to solder anywhere, the chip is in the DIP-bed and is simply removed from there.

Answer 2

There is a way - put down CodeRush with good cognac. It seems that CodeRush is the best specialist in this topic in all of Habré, no less authority than "Autobotanist" on forums about car restoration.

Answer 3

The most stupid way, if there is a computer storage nearby, is to take a processor of a lower class, which will 100% start on this motherboard, and flash it on it. You have 14 days to return. At the same time, check the board, because judging by the symptoms, it simply does not start. Maybe that's the issue with her.

Answer 4

Thanks everyone for the replies. In any case, the mother goes to the store right at the time of writing.
I wanted to flash it at night, but maybe all the tinsel in the hostel has nothing to assemble a 5v-3v converter from. Not a single resistor at hand. Eh. It would be nice.
In any case, now I will snatch the old motherboard and make myself a base for on-line operations. All the best :)