1. Factory reset the router. 2. Update the firmware 170630 locally. Download the firmware 170630 from the website, then manually click Upgrade button to upload the firmware file.

I haven't tried QOS, but I have the same issue with the antivirus options. TP-LINK support said to factory reset and not set it back up with my saved settings file. Yeah, not about to spend the time doing that because I change a lot of settings! If you try it, let us know if it works.

BTW, last night I downloaded the Tether app to my phone to see if I could turn on the antivirus from it, but when I tried going to the antivirus page, it gave me an error saying it couldn't read my antivirus settings. Because you are also having trouble with the QOS, I tried accessing that page from the app, but got the same error. I thought that was interesting!(I don't like that the tether app shows my Wi-Fi passwords in the open and don't have a need for the app's features, so I don't use it and deleted it off my phone again after this experiment.)

I had the same problem. I was able to fix this by downloading the firmware via a browser, not the button in the router settings and then manually upload and install the firmware. I re-installed the exact same version and did not have to reset back to factory defaults or anything else. Your mileage may vary but I would try this before wiping all of your config and starting over.

bgcompguy wrote

I had the same problem. I was able to fix this by downloading the firmware via a browser, not the button in the router settings and then manually upload and install the firmware. I re-installed the exact same version and did not have to reset back to factory defaults or anything else. Your mileage may vary but I would try this before wiping all of your config and starting over.

... and I din't have to reset to factory default first, either.

Did you load your settings from a backup file after that or did you have to manually set everything up again?

Happyhour wrote

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Hello,Im having issues with homecare in latest firmware (170630)- antivirus options are not being saved, when relogging, options are turned off again.- when trying to set QoS, I keep getting a 'failed' popup.Is there any fix?Thx in advance.

Good luck to you all that updated to 170630. About two weeks after updating my c5400 to 170630 I started seeing random reboots and the UI was very laggy/buggy when trying to change settings or even just view all the settings. Not too long after the reboots started I lost all wifi on my router. Factory reset, reflash firmware, factory reset again and again....nothing would bring it back to a usable state. Support even sent me a "Beta" firmware to try but even it didn't help. I had to RMA the unit ultimately. I believe there are some major issues with the 170630 firmware that need to be addressed by TP-Link.

Tink wrote

Did you load your settings from a backup file after that or did you have to manually set everything up again?

No, I didn't. All my settings were kept. I did follow the update instructions to unplug the USB storage device I had plugged in to the router before doing the upgrade.

Great! Thanks!

djf8, I have had no issues with the current firmware except for what is mentioned in this thread (antivirus not sticking). I upgraded via the router downloading it, so will soon try the method mentioned here to see if I can get the antivirus working.