- 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.
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| TD-8840T_V4_130327 | | Published Date | 3/27/2013 |
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| Language | English |
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| File Size | 1.03 MB |
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| Operating System | Win2000/XP/2003/Vista/7/8/Mac/Linux |
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| Modifications and Bug Fixes | - Fixed the problem that you can't see IPTV properly.
- Fixed the problem that this modem can't support the application of VOD.
- Fixed the problem that this modem can't be synchronized with ISP after enabling TR069.
- Fixed the problem that sometimes you can't get correct parameters using CWMP.
- Fixed the problem that you can't input the password which is longer than 32 parameters in CHAP mode.
- Fixed the problem that this modem might reboots automatically after changing the length of LAN mask.
- Fixed the problem that you can't input a hostname which is longer than 19 parameters.
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| Notes | For TD-8840T v4 |
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| TD-8840T_V4_130114 | | Published Date | 1/14/2013 |
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| Language | English |
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| File Size | 1.36 MB |
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| Operating System | Win2000/XP/2003/Vista/7/Mac/Linux |
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| Modifications and Bug Fixes | - Fix high-volume packets' ping fail bug.
- Fix invalid DNS bug after rebooting with PPPoE&connect on demand.
- Fix some bugs leading by adding and deleting WAN connection repeatedly.
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| Notes | For TD-8840T v4 |
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| TD-8840T_V4_120809 | | Published Date | 8/9/2012 |
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| Language | English |
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| File Size | 1.01 MB |
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| Operating System | Win2000/XP/2003/Vista/7/Mac/Linux |
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| Modifications and Bug Fixes | - First firmware for V4 hardware version
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| Notes | For TD-8840T V4 |
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