İ have update problems solved. But trackpad not yet. When do you use two fingers for up/down it sometimes zooms page. So İ deactivated two finger zoom in order freely use two finger up/down in touchpad.
Before downloading this fix should İ backup driver or not?
I didn’t uninstall anything. After updating, touch pad seems more reactive. 2 fingers gesture seems partially fixed. Two fingers scroll works with IE or Firefox, but don’t works with Microsoft applications like Device manager… Strange!
After installation, I just had to uninstall ELAN SMBus Driver.
Finally, we can say that the touch-pad is 90% functional!