Blackberry connection error!

I have a problem with unlocking Blackberry 8900:

Please Install Original BlackBerry driver (instead of LibUSB).
This solution works with the original BlackBerry driver only.
Please close all BlackBerry desktop software.
Please plug USB cable to phone (without battery)…
Connecting with device…
Finding Device…
Wait Arrival…Inf…

I installed clean windows7 x86, install original drivers from official site :…93E4F3BB068C22

Then I installed LGtool 2.59, then lgetool_bb_support_1.1.exe. I checked that I have original drivers installed instead of libusb. I can flash the phone, I can use BDM but not LGtool
please help! May you give me your .inf’s of drivers you used.
Thank you.