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Q: The ABCD lights are flashing and the unit does not function, even after a factory reset. A: This is recovery mode, meaning there was a failed update attempt. The unit will function again once the update is successfully completed. In the event of a failed update, power up while holding A/C and retry the update using the Line 6 Updater found at www.line6.com/software. If the update fails repeatedly, you likely need to try the process on a different computer. Q: I'm seeing the "Load error 21" error message OR the A/D lights are solid and the unit is non-responsive. A: These situations are likely caused by corrupt tones. If you find yourself in one of these "bad tone" situations, you should follow the steps below get to a fresh state: o Copy your User tones to My Tones (backed up in the cloud) or share them with the other options offered by the app so that they're backed up o Forget the Bluetooth connection o Reset the unit ( hold Master volume + tap while powering up) o (Re)install the v1.10 firmware, which resolved many patch and Bluetooth issues o Uninstall the app o Power cycle mobile device o Install latest version of app o Pair to Firehawk Load user patches one by one, testing each one along the way, to find the bad patch. It would be great if you can tell us if you find a bad patch you found on our cloud so we can test it and/or eliminate it. Q: What can I do if I am experiencing Bluetooth connectivity issues between my Bluetooth device and the FIREHAWK FX? A: Make sure you are using the latest firmware and app. For other troubleshooting steps about Bluetooth connectivity and usage, check out our Bluetooth Connectivity FAQ HERE. Q: What should I do If I am experiencing connection issues with the FIREHAWK FX Remote app when I switch back and forth between apps on my iOS device? A: An important thing to note about the FIREHAWK FX Remote app functionality is that in addition to the iOS Bluetooth connection between your FIREHAWK FX and your iOS device, there is a secondary 'sync' connection between the amp and the app. Each time you minimize/close the app, the connection between the FIREHAWK FX Remote app and the FIREHAWK FX will need to be re-established, even if your iOS device is reporting that the FIREHAWK FX is connected via 'Bluetooth'. In this case, re-opening the FIREHAWK FX Remote app will automatically re-establish the connection within a few seconds. Make sure to look at the main menu of the FIREHAWK FX Remote app and wait for it to indicate that your FIREHAWK FX is 'connected' before moving forward using the app. If it does not automatically re-connect, close the FIREHAWK FX Remote app by double-tapping your iOS home key, then sliding the FIREHAWK FX Remote app window up and off the screen. Relaunch the FIREHAWK FX Remote app and it should re-sync itself with the FIREHAWK FX. Android devices usually have a function that lists all open programs where you can slide the app left or right to close it. Relaunch the FIREHAWK FX Remote app and it should re-sync itself with the hardware.

We've found that tones created while using the original 1.01 firmware can sometimes be corrupted, regardless if they are new or downloaded tones. This results in the device locking up, with a factory reset being needed for recovery (press and hold the Master Volume knob and the TAP button as you power up the unit). Firmwares at version 1.10 or later resolves this issue. Tones created in version 1.10 or later can no longer be corrupted like they would have under version 1.01. However, corrupted tones created in version 1.01 are still problematic when used in Firehawks updated to later firmware versions. We encourage those encountering this issue to update to the latest firmware via the Line 6 Updater software, then perform a factory reset. Please note that any tones not backed up to My Tones prior to a reset will be lost (corrupted tones cannot be uploaded because they crash the unit and thus can't be selected for uploading).