Comrex will be closed on Monday, October 10th for a federal holiday. Please note tech support will not be available. We encourage customers to contact us ASAP for assistance. We will reopen on Tuesday, Oct. 11th at 9AM Eastern Time (US).

Firmware Updates

ACCESS Rackmount Firmware 4.5-p11

ACCESS firmware version 4.5-p11 is available for download. This firmware is installed by the user via the Device Manager application.

SPECIAL NOTE: If your ACCESS Rack has a serial number of 7700 to 10368, please contact our Tech Support department before updating.

SPECIAL NOTE: If your ACCESS Rack has a serial number of 300 or below, additional memory is required before updating to 4.3 or higher. Please contact our Tech Support department at

Download the 4.5-p11 Changelog

Firmware Download Contents:

  • ACCESS Rack 4.5-p11 firmware file [.upd]
  • Device Manager application [.exe and .dmg]
  • Installation Instructions & readme [.txt]
  • ACCESS Rack Product Manual and Addendum [.pdf]
  • Hotswap-Technote [.pdf]
  • 4.5-p11 Changelog [.txt]
Download ACCESS Rackmount Firmware 4.5-p11

ACCESS Rackmount Firmware 3.0-p13

If you have encountered trouble updating your ACCESS Rack firmware to 4.3 or newer and your current version is older (such as 2.8-pX), please consider updating the ACCESS Rack in stages.

First download and extract the contents of the 3.0-p13 zip file and follow the included instructions. Once the unit is updated, continue updating to the latest firmware.

Download ACCESS Rackmount Firmware 3.0-p13

Comrex Version Security Concerns and Firmware Fixes



NEW! Gagl

Gagl is a cloud-based remote contribution solution that allows between one and five users to send and receive audio from computers and smartphones. That audio is conferenced (if more than one user), and delivered to a Comrex hardware codec. All participants can hear other participants and the codec “sends” audio back to them.

Learn more about Gagl

Fleet Commander

Fleet Commander is a software application for controlling multiple Comrex IP audio codecs simultaneously. Rather than logging into each codec individually and juggling a desktop full of tabs, Fleet Commander puts you in control of your codec fleet through one unified interface. With the ability to manage all codecs from one simple window, this easy-to-use tool can save time and increase productivity for busy engineers.

Fleet Commander contains all of the functionality of the Web-based Interface, but also comes with a few more features like active metering and the ability to copy peers and profiles between codecs. A Windows application, Fleet Commander can be used to manage every Comrex IP Audio codec in your fleet (depending on CPU and network limitations).


  • Simple to use
  • Unified interface for multiple codec management
  • Compatible with Windows 7, 8, and 10

Learn more about Fleet Commander

Fleet Commander is available as a one-time purchase of a license key per computer.

Contact a dealer to purchase

Comrex Connect Modems

The Comrex Connect Modem is designed to support the unique needs of remote broadcasters. A high-powered, industrial strength 4G/LTE modem outfitted with a high-gain antenna, the Connect Modem is more powerful than most USB data modems available on the market, to handle the heavy data load of a broadcast over IP.

Please note: FW 4.5p6 or higher is required on ACCESS Rack to use the US Connect Modem. 

Learn more about Comrex Connect Modems


Power Cord (IEC Socket)


Want to Learn more?

Contact us