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pai60
Fanfold Paper
Posts: 11
Registered: ‎10-24-2013
Location: Italy
Views: 3,532
Message 1 of 6

Lenovo U550 bios found

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.

pappoos
Paper Tape
Posts: 2
Registered: ‎01-11-2014
Location: Houston, TX
Views: 3,502
Message 2 of 6

Re: Lenovo U550 bios found

Where did you find this bios??

pai60
Fanfold Paper
Posts: 11
Registered: ‎10-24-2013
Location: Italy
Views: 3,495
Message 3 of 6

Re: Lenovo U550 bios found

Hi. This is the link: http://www.elvikom.pl/forum/viewtopic.php?lang=en&p=99008
You'll need to register to view and download the file.
vodek
Paper Tape
Posts: 4
Registered: ‎01-25-2015
Location: Moscow
Views: 3,287
Message 4 of 6

Re: Lenovo U550 bios found

vodek
Paper Tape
Posts: 4
Registered: ‎01-25-2015
Location: Moscow
Views: 3,285
Message 5 of 6

Re: Lenovo U550 bios found

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

d4v3d
Paper Tape
Posts: 1
Registered: ‎03-28-2016
Location: IL
Views: 2,315
Message 6 of 6

Re: Lenovo U550 bios found

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  ?

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