I got a TCL last year and it wouldn’t let me use the TV until I set up the internet. After 4 factory resets I figured out how to put it in store demo mode, and plugged in a separate streaming device that connects to the internet. Now I realize I could have connected the TV to the internet and then blocked it at the network level.
If you are using a network level block, make sure it’s a black hole and not just a DNS filter. I tried a DNS filter with a Roku and found that they bypass it with hardcoded values, even when the DNS server was statically assigned and DHCP assigned.
What you mean by black hole and filter? I blocked a bunch of tcl domains on my pihole and made my router drop everything in port 53 coming from every other device that wasn’t pihole. It seems to have worked for now… Is that a good solution?
No, it’s not robust. It may work for your TV, but it can be worked around.
DNS is like a phone directory for Internet: it translates domain name to IP addresses. If you block the DNS (what pihole does), it blocks the directory access.
But if the IP address of the servers are hard-coded in the firmware, the TV does not need a DNS, it can reach the server directly.
To trick the TV, you need to restrict the IPs it can reach. It might be delicate: it probably tries to ping some comme IPs to check it’s connected, then call the brand’s server for ads/updates/etc.
I got a TCL last year and it wouldn’t let me use the TV until I set up the internet. After 4 factory resets I figured out how to put it in store demo mode, and plugged in a separate streaming device that connects to the internet. Now I realize I could have connected the TV to the internet and then blocked it at the network level.
If you are using a network level block, make sure it’s a black hole and not just a DNS filter. I tried a DNS filter with a Roku and found that they bypass it with hardcoded values, even when the DNS server was statically assigned and DHCP assigned.
Wait till they start paying netflix to relay data for them :)
What you mean by black hole and filter? I blocked a bunch of tcl domains on my pihole and made my router drop everything in port 53 coming from every other device that wasn’t pihole. It seems to have worked for now… Is that a good solution?
No, it’s not robust. It may work for your TV, but it can be worked around.
DNS is like a phone directory for Internet: it translates domain name to IP addresses. If you block the DNS (what pihole does), it blocks the directory access. But if the IP address of the servers are hard-coded in the firmware, the TV does not need a DNS, it can reach the server directly.
To trick the TV, you need to restrict the IPs it can reach. It might be delicate: it probably tries to ping some comme IPs to check it’s connected, then call the brand’s server for ads/updates/etc.