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Ahmed Mossam at bios-mods.com has uploaded an unlocked BIOS for the M15x, based on the Dell version A09. A very big thanks to him for his work!! Here's the link to the original thread at bios-mods: M15x BIOS unlocking request I have flashed this BIOS and the system works just as with the regular BIOS, the only difference is that there are several new menus accesible in the "Advanced" tab of the BIOS: -IGD - LCD Control Sub-Menu -SATA Control Sub-Menu -SATA Hard Drive The performance options have new sub-menus as well: -Plaform Thermal Configuration -Clarksfield QPI-Sub-Menu -Clarksfiled Memory Sub-Menu Unfortunately there are no frequency ratio options in the bios. Each of those has a couple of further submenus. Check out the pics of the screen in the spoiler for all details: Not every of the new options will be useful though, e.g. enabling eSata port multiplying won't do any good since the PM55 chipset doesn't support this feature. I haven't tested all the new options yet, but I'll definitely take a closer look at them. Instructions for flashing: - Download the unlocked BIOS files, they can be found here. - Download the BIOS A09 executable file (R293649.exe) from the Dell driver site and extract it and copy the files to the root of a DOS bootable USB drive. - delete the following files W6702M.A09, W6702MB.A09.bin, W6702MB.A09 from the USB drive - extract the .zip archive with the modded BIOS files and copy the three files to the root of your USB drive - rename the modded files (W6702M_SLIC.A09, W6702MB.A09_SLIC.bin, W6702MB_SLIC.A09) to W6702M.A09, W6702MB.A09.bin and W6702MB.A09 -Shutdown your system and boot from your USB drive -Type fa.bat and hit enter -follow the instruction on the screen, after the flashing is finished, the system will shutdown itself -restart your system and don't do anything, it will restart a couple of times before it will boot into Windows, don't worry. Everything at your own risk of course, I don't take any resposibility for bricked mobos. Crisis information should be available at bios-mods.com in case you mess up totally. Hope some of you guys test this as well and give some feedback. Again, a very big thanks to Ahmed Hossam from the bios-mods.com forums.