Flashing the BIOS: What is the Correct/Safe Procedure?

Question

Can someone who has successfully Flashed the BIOS on a Toshiba please give a Step-by-Step procedure of using the safest method via a bootable CD/Floppy?  A single tread with the correct procedures and recovery methods would benefit all of us.  While I have flashed the BiOS of my computers through Windows and without failure, I plan to do my next session--if absolutely necessary to fix a specific problem--via a bootable floppy using a USB Floppy Drive.
I have read through these forums--and many others from different computer brands--and noted the many problems with users incorrectly flashing their BIOS' or having a failure while flashing within Windows.  The result is a required trip to a Toshiba certified computer shop for an EPROM flash ($100+) or a new motherboard ($300+).
Please provide any caveats regarding flashing and any recovery tips that might work before sending your rig to the shop for repair.
Thank you.
QosX505-Q879__ i7-720QM__1.6 GHz (2.8 GHz Turbo)6MB__PM55 Express Chipset__NVIDIA® GeForce GTS 360M w/1GB GDDR5/1274MB via TurboCache @ 2298MB__Physical Mem @ 6GB DDR3 1066MHz__64GB ATA SSD__500GB (7200) ATA HDD__Blu-ray Disc® ROM/DVD__18.4 LCD @ 1920 x 1080i native__Win7 P X64_SP1_3-120MM Fan NZXT Cooler_Rec 2/19/10
NZXT ACC-NT-CRYO LX Aluminum Notebook Cooler 120MM Adjustable Fans
__ CD-ROM-R-RW@ (24x)/CD-RW (24x)/DVD-ROM-R Single @ (8x)/DVD(4x) RW(6x) +R(4x)+RW (8x)/DVDRAM@(5x)/BD_ROM@ (6x)__8.4”TruBrite® TFT LCD @ 1920 x 1080i native (FHD) 1080i__

Answer 1

Go to the Product Support Link at the top of this page, enter in your model, then clik on the Download Tab to find the available bios files for that model.  DO NOT update the bios from within Windows.  Don't do it, don't even think about doing it if you want to use your computer again.  When you double click on the download you will be presented with the choice of creating a CD to flash the bios from.  USE THIS METHOD.  You can use a CD-RW so you don't waste a blank, but even the cost of a regular blank CD is cheap compared to the $100 that most places will charge you to fix a botched bios flash.  Be sure to burn the CD at the slowest possible speed to ensure the best possible quality.  Make sure that your battery is fully charged, installed, and the AC Adapter is plugged in just in case. 
And don't forget to go into the bios and hit the F9 key to load Bios/Setup Defaults then F10 to exit and save just prior to and immediately after updating the bios.
If you don't post your COMPLETE model number it's very difficult to assist you. Please try to post in complete sentences with punctuation, capitals, and correct spelling. Toshiba does NOT provide any direct support in these forums. All support is User to User in their spare time.