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I made a summary of the modded bios (5DCN90WW) v8.01 flashing procedure using fpt.exe in dos and windows for the Y580 There are other summaries but this one is more complete because it has less experienced people, such as myself, in mind. My laptop runs pre-installed win 8, the keys are in the BIOS I will follow this procedure, and if more experienced people can verify it, then I guess if will be safe for other people to follow (perhaps it's the same for the v8.00 bios? except using the (5DCN89WW) v8.00 modded rom? - perhaps it's the same procedure for the Y480? - someone could let us know) If you would be so kind as to have a look. This is the procedure 1. Backup your BIOS in windows using ftp64, the backup will be written into the same folder as the ftp64.exe file. Make sure that the fparts.txt file in this folder is the "fix-error-104" version. The backup will be automatically named as "BiosBackup.bin" 2. Next you'll be modifying the modded rom according to the info in your own backed up rom To do this you need to put 4 files in a folder and run the Y580-Y480_BiosFix.exe program The 4 files are i>the modded rom that svl7 made, it came named as "v801.rom" but now you copy it into this folder and change the name to "v801.bin" You do this before your run the exe file. ii> "BiosBackup.bin", which is the backup of your own rom that you made with fpt64 in windows, or maybe with fpt in dos. iii> The "fparts.txt" file (the "fix-error-104" version) which must be the same file that you used when you made the backup iv> The "Y580-Y480_BiosFix.exe" file With these files in place, open a command window, as admin to be safe, and run Y580-Y480_BiosFix.exe During the run it will ask you to give the name of the backup file, so you type in BiosBackup.bin and press enter And then it will ask you for the name of the modified rom file (meaning the one svl7 made), so you type in v801.bin and press enter It will produce a final version of the rom called v801Fix.bin, which will be written into the same folder, and this is the rom that you copy to the USB and use to flash with 2.Plug in your usb stick 3.Use the windows "HP USB Disk Storage Format Tool" to make it bootable and add a DOS OS (you'll need DOS files in a folder for this HP utility to be directed to) 4.Add all the files for the fpt dos program. Make sure that the ftparts.txt file is the one from the "fix-error-104" version, the same one you used to mke your own rom backup. 5.Add prr2.exe to the USB stick 6. Add your rom file called "v801Fix.bin" (this is the one you created with "Y580-Y480_BiosFix.exe") 7. Make a batch file called "flash.bat" with the 2 lines ... prr2 fpt -d v801FIX.bin -bios 8. Insert the USB (just to be safe put it in the usb 2.0 port next to the AC input socket)and reboot into bios with F2 9.In the BIOS, change "BOOT MODE" in the BOOT tab to "legacy support"and make sure that "legacy first" is also selected (without these changes it won't boot from a USB stick at all!) 10. Save and exit from the BIOS and it will reboot to USB 11. Run the batch file you created, flash.bat, to flash the v801FIX.bin (or type in the lines separately ...................... first type in "purr2" (no inverted commas) and enter then if that goes well, type in "fpt -d v801FIX.bin -bios" (no inverted commas) and enter. 12. And if there are no error messages, it will flash and reboot - or just shut down?. ..................................................... END ............................................................................. IF THEY LET ME INCLUDE LINKS TO EXTERNAL SITES THEN BELOW IS A LIST OF WHERE YOU CAN GET THE NECESSARY FILES (I can't access them on techinferno coz I havent made 5 posts yet) Download the ftp64 windows program from here Download "Prr2" program from here Download the modded rom file "v801.rom" from here Download the "Fpt.exe" dos program from here Download "fix-error-104" from external site here Download the "Y580-Y480_BiosFix.exe" file from here Download the "HP USB Disk Storage Format Tool" from here Download the DOS files to use with the HP USB Disk Storage Format Tool from here Instructions on how to use the "HP USB Disk Storage Format Tool" are here