BIOS and temperature questions

I have an nForce2 A7N8X-X mobo using A7N8X-Deluxe BIOS (don't ask). How safe is it to update to the A7N8X-X BIOS from a different BIOS set? AsusUpdate (the Windows flash utility) doesn't want to flash my BIOS with the A7N8X-X BIOS because they don't match the A7N8X-Deluxe BIOS. I'll try outside of Windows from either a boot disk or from the POST environment, but I want to make sure it'll work and I don't end up with a corrupted motherboard chip.

My second question is about temps. Whenever I start up my computer from a cold boot, and go into the BIOS to check the temps, I find that they're unusually high especially for a cold boot. The motherboard temps are around 50C and the CPU temps are around 60C. I'm guessing this is a bad reading on the BIOS part. Can this bad reading cause Windows to crash to the desktop or give BSOD while I'm doing system intensive operations. I have the side panel of my machine open and all the fans are working. I've tried underclocking my video card, but I'm still getting the same problem.

If you have the A7N8X-Deluxe BIOS, couldn't you simply flash to another, newer Deluxe BIOS instead of trying to move to the A7N8X-X BIOS?
It seems strange that the board would have the wrong BIOS image installed. I have no idea if it would work or not.

As for temperatures, 50-60 C is a reasonable operating range for 2200-2800+ Athlon XPs; however, that does seem a bit high for right after a cold boot. I don't think the temperature sensor causes windows itself to react, but it may cause the motherboard to prematurely shut down. Check the BIOS settings and there may be a way you can raise the shutdown temperature.

On a side not, make sure the heatsink on the CPU is free of dust as well. My brother's computer was overheating recently because of heatsink dust, even though all 5 of his fans were working well.

My old A7N8X-Deluxe was replaced with a A7N8X-X. But yeah, isn't the BIOS itself hardcoded onto the chip? I don't know why the old BIOS image from my A7N8X-Deluxe would still be on the A7N8X-X mobo. I wonder if I reset the jumper if the mobo would load the default BIOS.

I'll check the heatsink. Oh, and I have an Athlon XP 3000+ @ 2.17GHz.

Yeah, the BIOS is completely stored in hardware and is flashed onto a chip when the motherboard is manufactured. The only time that changes is if you run a BIOS update program that flashes the chip with a new BIOS image.

That said, it seems strange that an X-X board would be running an X-Deluxe BIOS...
You may want to check the Asus KB and support forum to see if anyone else has had similar BIOS version issues:
http://support.asus.com/default.aspx