From The 07K Wiki
Always use files that match your part number, make backups and ensure the file have the proper size for your ECU
You should definitely do some logging before using a new tune
Here you will find a collection of tuned files that you might use at your own risk.
Bricked ecu, we invite you to visit: Original Files
You can find instructions on how to flash the file over here : Reading and writing ECU
When uploading files, we recommend contributors to include the following: