01-04-2014 04:32 AM
Hi. Finally I found my related bios on the web. The file name is ideaPad_U550_LU15(23CN21WW).bin. I don't know what LU15 stands for but I think and hope it's the right bios for my laptop. I need to reflash it in a dos environment because of windows installation problems. At present I'm running Lubuntu 13.10 32 bit. Mine is a Insyde bios. Could someone tell me how to flash it and which bios utility/program I'll need. Thanks in advance.
Solved! Go to Solution.
01-12-2014 09:39 AM
01-26-2015 08:52 AM
01-26-2015 08:57 AM - edited 01-26-2015 08:58 AM
To update BIOS "under Linux" use BIOS Recovery:
1. Extract image of BIOS - 23CN21WW.fd (23CN18WW.fd) from 23CN21WW.exe (23CN218WW.exe) (EXE in this case - self-extract ZIP).
2. Rename 23CN21WW.fd (23CN18WW.fd) to LU15X64.fd.
3. Format USB stick to FAT.
4. Copy LU15X64.fd to USB.
5. Plug the USB stick (not more than 4 gb or about 2-4 gb).
6. Now plug the USB in the affected laptop and remove any power source such as battery and AC adapter.
7. Hold Fn+R (Fn+B or Fn+F or Win+B) key and then plug in adapter. Just after Plugging in the AC adapter. Press the power button.
8. After this you will see the USB light blinking and hear the the fan running.
9. You will then hear beep sound indicating that the BIOS is being reflashed. Leave the computer for about 5-10 Minutes. It will automatically restart. If it doesn't then restart the laptop manually.
10. If everything went well your laptop is back and the BIOS recovered.
This has been tested with the Lenovo IdeaPad U550 and it was successful!
In my U550 on step 7. work Fn+R
03-28-2016 05:06 AM
hi i got the same problem for bios
i tried your way and it didnt work
im suppose to copy only 1 file to usb or copy all files
and when i press ctrl+r i suppose to hold them all the way or i just let it go after i press the power
and what the difference between 23CN21WW to 23CN18WW ?