BIOS Update

NameOperating SystemVersionReleasedDownload
BIOS Update
1ECN33WW.txt
2.41 MB
Windows Vista 64bit,
Windows 7 64bit
3316 Apr 2010 Download
BIOS Update
1ECN33WW(V5.07x64).exe
2.41 MB
Windows Vista 64bit,
Windows 7 64bit
3316 Apr 2010 Download

Important information

Lenovo strongly suggests rebooting the system before applying the BIOS update.

Fixes and enhancements

1. When remaining battery capacity reach 10%, the beep alert will sound and it cannot be turned off except by muting the system sound.

2. Fix - Sony battery charge/discharge error

3. Fix - Synchronization issue between some USB devices and Y550p systems

Change history

1ECN33WW

1.Sony battery charge/discharge error

2. Synchronization issue between some USB devices and Y550p systems

1ECN30WW

1. When remaining battery capacity reach 10%, the beep alert will sound and it cannot be turned off except by muting the system sound.

Installation instructions

Update bios to version 33 BIOS.

Refresh BIOS:

1. Under windows, insert adapter and close all application

2. Run 1ECN33WW(V5.07).EXE , click 'Yes' to confirm BIOS upgrading ->system will auto-reboot after bios refresh ok in 2 minutes.

Notice: please do not shutdown system or remove the power while BIOS refreshing.