4G Router Firmware for EV-4X Series

4X Series Firmware Releases and Tutorials

EV4X Series Firmware for Mobile Routers

EV3X series firmware is used on the EZR24 and EZR34 series routers. They use the same MediaTek MT7621 architecture with 880MHz clock speed, 256MB memory, and 32MB flash memory.

The EV4X firmware supports multiple 4G LTE modems and even 5G-NR modules. It’s built-in various mobile modem drivers and multiple networking protocols to control the 3G/4G/5G modem and connect to mobile networks.

Powered by open-source firmware, you have full root authority to access the web interface, SSH Telnet terminal, and file system.

Cat12 LTE Router Applications with WiFi LAN Connections
The Latest Version: EV4040

Updated Features

  • NEW: Display connected 4G-LTE or 5G-NR network on the front page.
  • TWEAK: Updated 5G signal evaluation in different background colors.
  • TWEAK: Optimized modem path for rapid dialing to the mobile networks.

Download EV4039 firmware for the below routers

  • EZR24-05G // MD5SUM – 0d1682040f43ad3271c211fd68989223
  • EZR24-012 // MD5SUM – 6cb1d1cfc60c841aac8a6f57b601e48d
  • EZR34-012 // MD5SUM – 3d007cea8fa77358c71a58ee578ccfc4
5G Router Firmware Upgrade EV4040

Legacy Versions

Updated Features

  • FIX: The WiFi subsystem driver has been upgraded to improve wireless signal robustness and captive portal detection reliability.
  • NEW: IP Security (IPSec) support has now been integrated. IPSec virtual private networking (VPN) tunnels can now be configured through the admin interface under Services -> IPSec.
  • TWEAK: The mobile connection monitoring failover program (Watchdog) interval has been increased from 2 minutes to 3 minutes.

Updated Features

  • FIX: Showing signal quality under the mobile “4G-PPP” protocol.
  • FIX: Upgraded Wi-Fi access point driver.
  • FIX: Upgraded VOIP support plugins.
  • NEW: QMI-Cellular protocol under the “Mobile” interface.
  • NEW: Modify the TTL value easily on each interface.
  • TWEAK: Locked the “Mobile” interface’s firewall zone.

Firmware Upgrade Tutorial

DO NOT turn off the power while flashing and resetting the firmware!
If you run a critical upgrade with a leap of several versions, please choose “Local Upgrade” below and unselect the “Keep Settings” option.

  1. Log in router admin. Go to “System > Backup / Flash Firmware”;
  2. Find the section of “Flash new firmware image”;
  3. Suggest unselecting the “Keep Settings” option to avoid conflicts;
  4. Click the “Choose File” button on the row of “Image,” then click the button of “Flash Image…”;
  5. Compare the MD5SUM code and click the “Proceed” button to start flashing new firmware;
  6. Wait for 5 minutes, then connect to the router by Wi-Fi or LAN, and re-log into the router’s IP address.

Note: If you choose “Keep Settings” on step 3, the router’s password is the same. If you have not kept settings, the default password is none. Click the “Login” button to access the admin panel.

It requires an Internet connection to download the firmware file online. Please make sure your 4G router is connected to the Internet.

  1. After logging into the router, go to “System > Backup / Flash Firmware” on the top menu.
  2. Scroll down to the last section of “Online Upgrade.”
  3. Click the button “Check New Version.”
  4. If a newer version is available, it will start downloading automatically, then jump to the verify page.
  5. Click “Proceed” to flash the latest firmware. It will keep your current settings.
  6. Wait for 4~5 minutes until finish the flashing job. Then connect to the router by Wi-Fi or LAN, and re-log into the router’s IP address.

Note: If the device lacks a Hostname, Model number, or Serial Number, it will fail to download the firmware file. Please use the “Local Upgrade” option to upload firmware files manually.

2 thoughts on “4X Series Firmware Releases and Tutorials

  1. Giuseppe Rinaldi says:


    I am a new customer of modem router EZR24-05G i like to understand some possible feature upgrade for this product if is capable or the hardware not allow

    Here my tree request

    1) Dual sim function will be activated as a backup
    2) What kind of mobile connection is connected (5G or 4G LTE or 4G LTE advance)
    3) Traffic statistic, Limit threshold, SMS alert

    • Outdoor Router says:

      Thank you for your great and valuable advice. We appreciate your interest in new features to improve this product.

      1) Dual SIM functionality is hardware-dependent. Unfortunately, the EZR24-05G model only has a single SIM slot for the 5G module. EZR34T series outdoor 5G routers support dual SIM slots and auto backup.
      2) The 5G router connects to 3G/4G/5G according to the signal quality. When connected to the 5G-NR network, the front page shows “5G-NR” on access tech.
      3) Traffic statistics, thresholds, and SMS alerts are great feature ideas. Our development team is always working on enhancements like these.

      Thank you again for your feedback. We aim to provide the best experience for our customers.

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