It is possible to selectively decide which hardware is used with which driver (e.g. use an old, proprietary driver for iC3000GT and winUSB driver for iC5700).
1. Make sure that the winUSB is used for the desired hardware.
2. Connect the hardware you wish to associate with the old driver, e.g. iC3000GT.
3. Open the Device Manager, and search for Universal Serial Bus devices.
4. Right-click the device, e.g. iC3000GT (SN 12345), and select Update driver.
5. In the pop-up window select Browse my computer for drivers and navigate to your winIDEA installation directory, asystusbdrv subfolder (available from winIDEA 9.12.294 forward) and search this folder for a compatible driver, e.g. AsystUsb_iC3000GT.inf.
6. Restart the PC. You should see the iC3000GT listed under Development Tool in the Device Manager. It should now work with older winIDEA versions (e.g. 9.11.89).
7. Open the older winIDEA version and run the Communication Test via Hardware | Debugger Hardware | Communication | Test and make sure the driver is installed correctly.