Speed dropp after upgrading TD-W9980 vdsl router firmware

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Speed dropp after upgrading TD-W9980 vdsl router firmware

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
Speed dropp after upgrading TD-W9980 vdsl router firmware
Speed dropp after upgrading TD-W9980 vdsl router firmware
2018-08-04 21:59:36
Model :

Hardware Version :

Firmware Version :

ISP :

Hi all,

I am a new member here, i have a TD-W9980 router for about year and half and it worked flawlessly, but recently i upgraded the firmware from version 150507 to version 160125. At first it worked fine but after a few hours my internet speed dropped from 27 Mbps to 1.5 Mbps. I contacted my ISP and they said that the problem is because of the vdsl modem firmware and it's not compatible with local vdsl line provider. They tested another router from another brand and it worked fine,

Now i am unable to downgrade router firmware from 160125 to 150507.

Please help me to restore the old firmware.

Thank you all.
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Re:Speed dropp after upgrading TD-W9980 vdsl router firmware
2018-08-08 17:26:46
Is there any note it can't be downgraded shown under FW160125?

What's the error message when you try to downgrade?

Generally speaking, you can't update to other firmware if FW150507 is special one for your ISP.
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Re:Speed dropp after upgrading TD-W9980 vdsl router firmware
2018-08-09 00:16:21

Aprilcoco wrote

Is there any note it can't be downgraded shown under FW160125?

What's the error message when you try to downgrade?

Generally speaking, you can't update to other firmware if FW150507 is special one for your ISP.


Thanks for your reply,

Unfortunately it cannot be downgraded. Anyway i purchased another router.
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