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...

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...