Recommended · for some experience
Un-brick the FT232RL FTDI USB Serial Adapter
Why people recommend it
Linked as a fix for FT232RL FTDI USB serial adapters that appear bricked, restoring the USB product ID so the board is recognised again.
Watch for: Install a working driver first, then apply this fix
In their words
Take a look at this video - Check and see if they are bricked
PhillyNJ on arduino.stackexchange.com, Jan 2015. CC BY-SA.