FlashZilla Guide

FlashZilla GuideThis process will guide you through using your FlashZilla to receive a tune.FlashZilla Pro StepsVisit https://portal.tunezilla.com to download the TuneZilla Portal Windows software. The device only works on 64-bit Windows 10 / Windows 11. FlashZilla v3 StepsFlashZilla Read

Warning to 2009-2014 VW/Audi 2.0L TDI owners:

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.

Warning to all VW/Audi owners with Polar FIS or similar aftermarket devices:

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.

Click here to download the FlashZilla V3 Windows software. The device only works on windows 7 or windows 10.

Connect the FlashZilla to your computer using the provided USB cable ( any A to mini-B USB cable will work).

Start the software on your computer and it should automatically detect the device and update it. The update process may take over 5 minutes, you can skip it in the future.

Disconnect the device from your computer, then connect it to your vehicle using the supplied OBD2 cable. The vehicle OBD2 port is usually located under the dashboard, just to the left of the steering wheel.

Tap the "Tuning" icon on the screen and go through the selection to choose your vehicle. Follow the prompts to read your car's original file. tuning menu .jpg

Select your brand. brand menu.jpg

Select your model. model menu .jpg

Select your engine.

If you don't see your vehicle (ECU) listed, you can download an updated template file below.

Follow the ignition prompts to read a file off the vehicle. Once complete, disconnect the device and plug it back into your computer. ignition prompts.jpg

With the device plugged in and the program loaded click "Download data." to download the file from your device to your computer. fz main menu download data.png

This will pop up a window asking you where you'd like to save the file. Select your location and hit save to save the file to your PC. It would be best to create a folder for your ECU files and any data logs, that way you can easily reference them in the future. example of saving a file.PNG

ECU ReadUpload the ECU read completed with your FlashZilla to begin the tuning process.FlashZilla Upload

When the file has processed it will download to your computer and should pop up a window for you to choose where to save it. saving downloaded file.PNG

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.

Now that you have the file saved to your computer, open the FlashZilla program and press "upload data" to upload your saved file to the device. upload link.png

It should prompt you when the data has finished writing, disconnect the device from your computer and plug it into your vehicle. data written to fz.PNG

With the tool plugged into your vehicle go through the tuning menu and hit yes to proceed. This will open a menu with your tune files and original ECU software, along with an asterisk next to the currently installed file. tune menu on device.jpg

Tune complete, enjoy responsibly!Troubleshooting A Small Grey box with a black background and no other items is on screen when connected to the vehicle.Cause: Failed OBD on Device.Solution: Exchange of the current device with new FlashZilla.F002 - Writing not allowed - or - “Tuning File is empty”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.ERR_INVALID_FILE when trying to load a tune from your computer to your FlashZilla.Cause: 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. Solution: 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. Touch Screen is not working / areas of the screen are not functioning.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.“No_Credit” - on DeviceCause: Device has been erased.Solution: The Device S/N must be given to the tool Manufacturer, and credit will be added.