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Download for TL-MR3420 V2

  • Please verify the hardware version of your device for the firmware version. Wrong firmware upgrade may damage your device and void the warranty.
  • Do NOT turn off the power during upgrade.
  • Do NOT upgrade the firmware through wireless connection unless the device only has wireless connection;
  • It's recommended that users stop all Internet applications on the computer, or simply disconnect Internet line from the device before upgrade.
  • Use decompression software such as WinZIP or WinRAR to extract the file you download before upgrade.
Published Date19.03.2015
File Size3.63 MB
Operating SystemWin98SE/Me/NT/2000/XP/2003/Vista/7/Mac/Linux/Unix
Modifications and Bug Fixes
  1. New Features/Enhancement:
    (1)Maximum number of devices that can connect to wireless network changes from 14 to 32;
    (2)Add watchdog function.
  2. Bug Fixed:
    (1)Fixed the bug of compatibility with Chromecast;
    (2)Fixed the bug that time setting of Access Control cannot set later than 23:00;
    (3)Fixed the bug that when the wireless configuration is set to (mode:11n only, channel width:20MHz or 40MHz) in quick setup, it indicates error in wireless setting on Chrome, or shows (mode:11bg-mixed channel width:20MHz) on Firefox;
    (4)Fixed the bug of 3CX phone compatibility problems;
    (5)Fixed the bug that there is no reboot progress bar for firmware upgrade. Device reboots when upgrade progress bar shows 80%, web GUI cannot automatically jump to quick setup/status 20s after upgrade progress bar shows 100%;
    (6)Fixed the bug that dial-up fails if PPTP address uses the same subnet as LAN when using PPTP dial-up.
NotesFor TL-MR3420ND_V2
Your device's configuration will be lost after upgrading, please note that you HAVE TO configure your device again after upgrading.
Published Date12.09.2014
File Size3.79 MB
Operating SystemWin2000/XP/2003/Vista/7/8/Mac/Linux
Modifications and Bug Fixes
  1. Fix the bug that LTE modem can't auto-deblock PIN;
  2. Fix the bug that when you click the " Enter PIN Code" in the status page, you will get a "501 error" message;
  3. Fix the bug that using E3276 modem with TL-MR3420,watching online video or high speed download via wireless will make TL-MR3420 reboot itself;
  4. Fix the bug that router can't show 3G/4G signal strength;
  5. Fix the bug that the backup link won't revert to the main link when the main connection resumes to normal again;
  6. Fix some modems' compatibility issues and known bugs.
NotesFor TL-MR3420_V2
Published Date19.03.2014
File Size3.79 MB
Operating SystemWin2000/XP/2003/Vista/7/Mac/Linux
Modifications and Bug Fixes
  1. Improved security mechanism.
  2. Improved 3G/4G compatibility.
  3. Added PIN auto-deblocking function.
  4. Improved WDS function.
  5. Improved Daylight Saving Time.
  6. Improved user experience .
  7. Improved firmware upgrade stability.
  8. Added time zone support for Caracas.
  9. Fixed some bugs.
NotesFor TL-MR3420 V2
Category Language Download Size
Datasheet English TL-MR3420_V2_Datasheet 1.02 MB
Declaration of Conformity English TL-MR3420_CE_DOC 410 KB
User Guide English TL-MR3420_V2_User Guide 1.96 MB
User Guide English TL-MR3420_V2.0_User Guide 1.73 MB
3G/4G USB Modem Compatibility List English USB_Modem_Comp_List_TL-MR3420 -