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Firmware reflashing


You do not need to reflash the firmware unless you want to bring your Reach to its initial state. This will delete all the data on your unit.

This tutorial shows how to reflash Reach RS2/RS2+ firmware using Reach Firmware Flash Tool.


Most new features are released via the Emlid Flow app and can be updated simply via its interface. You can find more information in the Settings overview section.

Reach Firmware Flash Tool installation

Download and install Reach Firmware Flash Tool.

Download [EXE, 101.0 MB]Download [DEB, 102.0 MB]Download [DMG, 107.0 MB]

Windows installation


We recommend that you disable any antivirus or security software on your computer before installing Reach Firmware Flash Tool. Such programs may delete important files that the tool needs to work correctly.

  1. Double-click on the downloaded file.

  2. Follow the instructions to install Reach Firmware Flash Tool on your PC.

  3. Reboot your PC.

Ubuntu installation


We recommend using the terminal to install the Flash Tool on your PC.


If your Flash tool version is 1.7.1 or older, to update to the latest version you will need to add the new GPG key. Run sudo apt-key adv --keyserver --recv-keys 90F3927E0416B765 command in the terminal.

  1. Press Ctrl+Alt+T to open the terminal.

  2. Navigate to the directory with the downloaded file with cd ~/Downloads command.

  3. Run sudo dpkg -i reach-firmware-flash-tool_1.11.1_amd64.deb to start installation.


    Please confirm adding the current user to plugdev and dialout groups during the installation process. In case of a negative answer, the application might not work as expected.

  4. Reboot your PC.

macOS installation

  1. Double-click on the downloaded file.

  2. Follow the instructions to install Reach Firmware Flash Tool on your Mac.

  3. Drag the application icon to the Applications folder.

Reflash your Reach RS2/RS2+

Reflash your Reach following the steps below:

  1. Open Reach Firmware Flash Tool and choose Reach RS2/RS2+.

  2. Connect your Reach in Firmware mode.

    How to switch your Reach to Firmware mode

    Make sure that Reach RS2/RS2+ is turned off and perform the following steps:

    • Press and hold the power button

    • Plug the USB cable into PC

    • Release the power button

    • All LEDs should blink several times simultaneously, and then start blinking one after another

  3. Download the proposed Reach Firmware .zip file.


    Make sure you have enough disk space. Reach Firmware Flash Tool creates 2 folders: one to download the image and another one to unpack it. Once you close the Flasher tool, the folder with the unpacked image will be deleted.

  4. Click Flash.

  5. Wait until the end of the flashing process.

  6. Wait until Reach reboots after reflashing. When Reach successfully reboots, you will see "Reach is flashed and ready to use" message.


    Do not unplug your unit on this step.

  7. Set up your Reach.


    You can check the First setup guide to ease setup process.