Iwill has made the bios update very simple for the KK266 motherboard.
1. You will need a format a floppy and choose Format Type: Full and clear any text in the Label box line if any. You can format a floppy disk by right click on the A: drive and select format.
2. Download the latest Bios 0307 from Iwill and unzip it, you will get a KKR0307 folder. Open the folder and copy the three files to the formated floppy disk. Now you have everything you need to flash the bios.
3. Before you flash you bios, you will need to go into the bios to change: BIOS-ROM FLASH PROTECT to Flashable. If you want a better insurance, don't overclock you PC while you flash your bios. Boot a couple of time to check your pc is running fine.
4. To flash you bios, Hit ALT-F2 when ask at startup. It will look for the AWDFlash.exe. Now insert the floppy with bios and hit enter, then it will show you the bios you wanna flash which is KKR0307.BIN. Just hit enter and it will start updating automatically. Don't hit any key, it will restart on its own after it's done, if not exit the program and shut down with the power bottom.
5. Go inside the bios menu and load setup default. After that setup the bios the way you want it and change back Flashable to Non-Flash and save changes to reboot. I have to said the risk is minmum with this procedure. All I can think of for a failure would be power outage. Done for now, I hear there could be a new bios with some bugs fix soon.
I have to said the bios update instuction on Iwill website is quite confusing. I used to use a bootable floppy with the bios files but the way I just told you is so much easier. If you still has any doubt, check with few more people on how they flash their Iwill KK266. Good luck.