Lenovo ThinkPad Edge E220s BIOS 1.21 for XP/Windows 7

Fixes:
[New functions or enhancements]
- Enable Discrete Graphics mode to support Open GL (new AMD graphics driver is required).
- Support Media Key Row functionality switch utility.
- Added SSD/FDE erase function.

[Problem fixes]
- Fixed POST hang when some Android smartphone is attached.
- Corrected Fn Key Lock behavior.
- Fixed an issue that doze mode did not work as expected.

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Note: Try to set a system restore point before installing a device driver. It will help you restore system if  installed  driver not complete.