T4S T8S Firmware Update Instructions

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Before proceeding, please read the following instructions:

These instructions describe how to update the firmware of your ToneMatch® mixer.

  1. Download and install the LI System Updater tool at https://www.bose.com/en_us/l1_downloads.html.
  2. Connect the mixer to your computer via the 2.0 USB Type-B port on the rear panel of your mixer.
    See Figure 1.
    Figure 1
  3. Connect your mixer to a power source via a ToneMatch cable or power supply and turn on your mixer.
  4. To download the latest firmware, follow the appropriate link:
  5. Launch the L1 System Updater.
  6. Click the "Update" button next to "T4S (or T8S) Firmware". See Figure 2.