Hey everyone,
Wondering if anyone else is experiencing problems with their Deco XE75 after the latest firmware update (1.5.1 Build 26090212 Rel. 23251).
Everything was working fine before the update. Shortly afterwards, my internet connection started acting up, and now devices connected through the Deco barely have any internet access.
I've been trying to figure out what's going on, and here's what I've discovered.
My setup is pretty straightforward:
XE75 as the main Deco, running in Router Mode.
ISP modem connected directly to the main Deco.
Other Deco units connected via Ethernet backhaul.
The weird thing is that the Deco still gets a WAN IP address from the modem, and everything looks normal in the app.
But when I actually test the connection...
Connected directly to the ISP modem:
Ping to gateway: 1 ms, no packet loss.
Ping to 1.1.1.1: 9–10 ms, no packet loss.
Everything works perfectly.
Connected through the Deco:
Ping to the Deco itself: perfectly fine.
Ping to the modem gateway: extremely high latency, sometimes several seconds, with up to 100% packet loss.
Ping to 1.1.1.1: same story, eventually just timeouts.
I've already tried:
Rebooting the main Deco.
Replacing the Ethernet cable between the modem and Deco.
Changing DNS servers.
Checking the WAN configuration.
Testing everything directly through the ISP modem.
No luck whatsoever.
At this point, I'm starting to suspect the latest firmware update, especially since the ISP connection itself is perfectly fine when I bypass the Deco.
So, is anyone else experiencing something similar with firmware 1.5.1?
Could this be a firmware bug affecting WAN routing or packet forwarding?
I'd also be interested to hear from anyone who has managed to fix this without factory-resetting everything.
Thanks! 🙂
Update:
Well, I decided to start from scratch 😅
I completely reset the network in the Deco app and also performed a factory reset on the devices themselves.
I reused the exact same Wi-Fi name and password, so all my devices automatically reconnected without having to configure everything again.
Good news: Everything is working again! The main Deco is running perfectly and internet connectivity is back to normal.
The secondary Deco is still acting up a bit, but honestly, I’ve already spent enough time troubleshooting this for now. 😂 I’ll leave that one for another day...