Any time you have an issue with the TDN App or your device, please try the steps below. You'd be surprised how many issues are related to the mobile phone or device settings rather than the App! If none of the solutions below resolve your issue, please let us know. For fastest service, please include the following information with your inquiry: At least one previous order number Device model & generation (e.g., RTD+, RTD4, MPVI3) A brief description of the issue with screenshots if possible An info log (instructions here) Many problems can be fixed by uninstalling and re-installing the TDN App  This is the best starting point for most issues and shortcuts several troubleshooting steps at once (such as app updates, verifying that you're logged into your account, etc.). While the app is uninstalled: Forget any existing bluetooth connections to your device (via phone settings) Clear the bluetooth cache on your tuning device: Provide power to your device Press & hold the square button on the front for 10+ seconds (until you see a fast blue flash) Once the app is re-installed: Log back into the TDN App Be sure to use the same login credentials as when tuning was completed Complete First-Time device setup (TDN App > Tools) Allow all requested permissions with full access (Precise location, cellular data, wifi, etc.) Individual things to check Verify that you are still logged in to your TDN Account (and using the same login as you used for tuning) Re-sync your device and update firmware Check for updates (through the App Store and within the TDN App) Check that your phone has granted appropriate App Permissions to the TDN App Re-try First Time Setup Specific issues: Files not displayed / missing files: Ensure that you are logged into the correct TDN account (reference previous emails from TDN, or Tune Delivery Network) Sync Files (TDN App > Flash > Vehicle Folder if applicable > SYNC FILES button) Required Update for iOS Users (see image below) The most recent information on troubleshooting TDN-related issues can be found on the HP Tuners website: HP Tuners Support Search HP Tuners TDN Guide Please note: We will make every effort to assist you within our capabilities. However, you may need to submit a help ticket with HP Tuners. In this case, including an infolog (instructions here) with your support ticket is helpful. HP Tuners also offers live support during normal business hours. To initiate a live chat, please click "Connect With Us" at help ticket link.

This is expected in some cases and can be resolved by following the Additional Steps for Read Vehicle Errors in our TDN Quick Start Guide.  How to Record and Submit a Data Log: With your device connected to the vehicle's OBD-II port and the engine running: Open the TDN App → Data Log (paper icon) Tap START → wait for gauges to appear on your screen Let the vehicle idle and continue recording for 5 minutes Tap STOP to end the data log The app will process the log and display a list of files. - If you don’t see the file list, go to Data Log →View & Sync Files - Make sure the file is synced (See: Checking for Synced Files) How to gather and submit an Info Log: With your device connected to the vehicle's OBD-II port and the engine on or off: Open the TDN App → TOOLS / SETTINGS (gear icon) Tap HELP →Gather Infolog for Support Tap GATHER INFO LOG and follow on-screen instructions The app will display a summary screen. Tap Share and save the file* Attach the Info Log to your Tune Request *Note: How to save the file depends on your operating system or app version. You can always email it to yourself then save the .txt file

The Tune Delivery Network (TDN) is a cloud storage service for tune-related files. It's created and maintained by HP Tuners, and is only compatible with specific types of HP Tuners files. All TDN files are stored remotely on a secure server. Like other cloud storage services, you can only see files associated with the account you're signed into. You can invite others to view and share files by "linking" them in the TDN App (our invite code is TFWP-6913). TDN files are pushed to / pulled from the cloud by "syncing" them in the TDN App. The TDN App provides secure access to the TDN, and directs your tuning device on what to do. Free for Android and iOS It's created and maintained by HP Tuners, and is only compatible with specific types of HP Tuners files, devices, and vehicles. The App establishes a secure connection with TDN Servers and provides you (and us) with access to tunes and data logs, vehicle diagnostic information, and more. Creating and signing into an HP Tuners Account is required to use the TDN App, as the app needs to know which account on the server to access files for. You can invite others to view and share files with your TDN Account by "linking" them as your tuner to your account in the TDN App. The app communicates with your vehicle through a tuning device, and communicates with TDN servers through an active internet connection (Wifi or cellular data). The app uses secure authorization to sync files to and from TDN servers when... Importing files from your device to the TDN. Receiving files from a linked tuner to the TDN. Exporting files from the TDN to your device.

Stock Read / Stock Tune Open the TDN App → tap READ / WRITE Tap the vehicle folder Verify that a green check mark icon appears to the left of the file name (Restore) If... → A green check mark icon appears next to the file name, this means your file is synced. → The green check is missing and/or a "SYNC" button appears next to the file name, this means your file is NOT synced. Tap the "SYNC FILES" button near the bottom of the screen. To Sync Files Provide power to your device, then tap SYNC FILES near the bottom of the screen and follow the on‑screen prompts. Note: If the green check still does not appear, ensure that you are still logged into your account (go to the account screen and log in again) and then try to sync the files one more time. ──────────────────────────────────────── Data Logs: Open the TDN App → tap DATA LOG Tap VIEW & SYNC FILES Tap the vehicle folder If... → An "UPLOAD" button appears next to the file name, this means your file is NOT synced. Click "UPLOAD" and follow on-screen prompts. → There is NOT an "UPLOAD" button next to the file name, this means your file is synced. To Sync Files: Provide power to your device, then tap UPLOAD next to the file name and follow the on‑screen prompts. ──────────────────────────────────────── General Notes: The best way to check that a file is synced is by tapping the file name and verifying TDN Status: TDN Status: Ready → File is synced Any other TDN Status → File is NOT synced A green checkmark means the file is successfully synced to the TDN server, but other icons or symbols may be displayed and do NOT relate to sync status. Power to your device can be supplied via: OBD‑II (key on / engine off), or USB‑C on the front of the device (like charging a phone) If you received an email from Calibrations stating your file was not synced, be sure to submit a NEW request in Tuning Central after syncing the file ────────────────────────────────────────

If we’re unable to locate your TDN account, it’s usually due to one of the following reasons: Incorrect Email or Login Info Double-check that the email address you entered on your TDN Request is the same email address you used for your TDN account (TDN App > Account). Multiple Accounts If you’ve used different emails or devices, you may have unintentionally created multiple accounts. Try logging in with any alternate email addresses you may have used. Account Not Yet Created If you haven’t logged into the TDN App before, your account may not exist. You’ll need to create an account in the TDN App to get started. Tuner Not Linked Please be sure that ZFGR is linked as your tuner - our invite code is TFWP-6913 (TDN App > Account > Link Tuner). Once you have corrected any of the above items, please submit a new TDN Request in Tuning Central.

Yes, please check that the file is synced then submit a request for Stock Calibration in Tuning Central. Instructions for syncing files are found in the TDN App FAQ [direct link to this FAQ].

Yes, syncing alone does not automatically alert us that a file is ready. Please submit the appropriate request for Stock Calibration in Tuning Central.

This could be due to: Poor internet connection App not updated Server delay Try restarting the app or checking your internet connection. If the issue persists, contact sales@tunedbyzfgracing.com

If your TDN App shows a blank screen or no tunes/files, try the following steps: Check Your Internet Connection A weak or unstable connection can prevent the app from loading your files. Make sure you're connected to Wi-Fi or mobile data. Refresh the App Close and reopen the TDN App. This often forces a refresh and reloads your synced files. Tap “SYNC FILES” If your files haven’t been synced yet, they won’t appear. Tap the “SYNC FILES” button at the bottom of the screen to upload/download any pending files. Log In (With the Correct Account) Make sure you’re logged into the TDN App, and that you're using the correct login/username. Files are tied to your account. Update the App Ensure you’re using the latest version of the TDN App. Outdated versions may have bugs or syncing issues. Re-Install the App If you haven't used the TDN App in a while, there's a chance that you need to uninstall and re-install it completely. Once re-installed, please sign in (see #4 above) and sync files again (step #3). Still Not Working? If none of the above steps work, contact sales@tunedbyzfgracing.com for help! For fastest processing, please include your order number(s). There may be a server-side issue or account mismatch.

Any file that your tuner needs to review—such as data logs or stock files ("Restore")—must be synced. If it’s not synced, your tuner won’t be able to see or use it.

You can, but your tuner won’t receive the file until it’s synced. To avoid delays, always sync your file in the TDN App before submitting a new request in Tuning Central.