This process will guide you through using your FlashZilla to receive a tune.
Visit https://portal.tunezilla.com to download the TuneZilla Portal Windows software. The device only works on 64-bit Windows 10 / Windows 11.
If you have a Golf, Jetta, or Beetle, then before you start writing anything to your ECU,
you should continuously charge your battery at 12.5v to 13.5v or remove the
radiator fan fuse.
Radiator fans sometimes will run during a tune read or write operation, and that can affect the battery charge.
If you have a Polar FIS or similar product (an aftermarket product that customizes your instrument display),
then it is strongly recommended that you remove it before reading or writing your ECU. We have received reports
of engine no start, weird instrument glitches, and fault codes if the software becomes corrupted which may
require an update or temp removal to correct. You can re-install these devices after you finish reading or
writing your ECU.
To receive a tune file you will first need to read your vehicle's ECU software off.
If you don't see your vehicle (ECU) listed, you can download an updated template file below.
If you cannot find where the file saved, right click on your browser's saved files, or go to your
"download" folder to see if it saved there.
Cause: Failed OBD on Device.
Solution: Exchange of the current device with new FlashZilla.
Cause: The tool doesn’t currently have a tune file installed.
Solution: Upload a tune file to the device following the instructions on the previous steps.
The stock file may not match the tune file due to erasing the device - or -
The tune file that you downloaded may be corrupted -or-
Your computer has difficulties with transferring the file to your Flashzilla.
1. If you have erased the device, download a new stock file from the vehicle, upload the .usr file to the support ticket and DO NOT erase the device while waiting for a tune file.
2. Try loading the tune file from your computer to your FZ a few more times. If that fails, please save a new copy of the stock file from your FZ to the computer and re-upload it to the ticket so we can reprocess the tune.
Cause: Screen may need recalibration.
Solution: Attempt to access the screen calibration settings using your finger or a stylus. If you’re unable to navigate the device, it may be necessary to swap out the device.
Cause: Device has been erased.
Solution: The Device S/N must be given to the tool Manufacturer, and credit will be added.