[meteoestarreja]

If this works, maybe a hybrid driver can be made also that would work with both original and counterfeit chips.
Just a thought ...
Anyway, excelent info Werk_AG!

pierrelux, I found this on a forum, it may help you to recover your Arduino

The workaround:

You need a Windows XP system or a Windows XP virtual machine running in a Linux or MAC system. Please note that it won't work in Windows 7 or Windows 8 VMs because it will detect the device as unknown device and it will not allow it to attach it to the virtual machine. I had Mac and it happily allow it to attached to the Windows XP virtual machine. Run your VM or the Windows XP system and attach the USB device to it.

Download the official driver for Windows XP from FTDI site, extract it and edit both the .INF files. Find and replace all 6001 to 0000. Now this modified driver will work with your counterfeit device in Windows XP. Update the drivers from device manager for the counterfeit chip.

To program the PID back to 6001 you need to download M_Prog or FT_Prog utility from FTDI website. Download any one of them and run it. Scan and Parse for the devices. It will show the device attached to your VM or the System. Now change the PID back to 6001 and reprogram it.

Dont connect it to Windows 8 or Windows 7 system now. First delete any existing driver from your system, there is a utility available in FTDI site to remove old drivers. Second find any old FTDI driver from internet, just google it, you will get few links. Disable your internet connection in your system and now connect you device and update the drivers from the downloaded driver. The device will work happily with the old driver.