Remember that after you pay the keys and sent via email, have no refund.
Either by misuse (user mistakes at the moment of reset).
Also remember that some features are dangerous, experimental and without any warranty.
Firmware downgrade may not work on printers manufactured in 2015.
The key will be sent to your paypal email.
Using this website indicates that you accept these terms and conditions.

You are about to buy a basic key for WIC Reset with 1 Use, worth 5 USD