| Name | Operating System | Version | Released | Download |
|---|---|---|---|---|
| BIOS Update 1ECN33WW.txt 2.41 MB | Windows Vista 64bit, Windows 7 64bit | 33 | 16 Apr 2010 | Download |
| BIOS Update 1ECN33WW(V5.07x64).exe 2.41 MB | Windows Vista 64bit, Windows 7 64bit | 33 | 16 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.