@Aravot 

I've got the same problem after 3 weeks. annoying, why still no fix after so long and so many cases?

  @Riley_S please open your eyes and see so many complaints

Just received a firmware update today with the following details out of my KS240. Hoping this fixes it.

```
{
  "get_latest_fw": {
    "type": 2,
    "fw_ver": "1.0.9 Build 241213 Rel.154621",
    "release_date": "2025-01-02",
    "release_note": "Modifications and Bug Fixes:\n1. Fixed the problem that the device goes offline with solid red LED indicator in some cases.\n2. Improved wireless stability.\n3. Fixed some minor bugs.",
    "fw_size": 786432,
    "hw_id": "***REMOVED***",
    "oem_id": "***REMOVED***",
    "need_to_upgrade": true
  }
}
```

  @Riley_S I have had this issue a number of times.   It happens when I lose internet (not wi-fi). When internet is restored, the lights remain red and a reset will not reset or restore normal function and I must replace the entire unit(s).   Very frustrating.

  @KentRda The issue that I was having is now resolved.  The issue I reported numerous times on this forum persisted for nearly a year.  At one point I filled out some form TP-Link sent me to identify the my specific KS240 (MAC address?).  Presumably so they could collect some diagnostic info.  Many months after that I received a message that a new firmware was being released.  That firmware came out roughly 6 moths ago.  In the end...  It was a major PITA when it was getting into this red light/locked up state, which happened about every 3 to 6 weeks for nearly a year, but its never happened again since the firmware update 6 months ago.  So I thankfully consider this particular issue closed/resolved.

  @nsrdave   I agree.  I've not had the problem for a few nmonths.  It more or less went away for me when they put out a firmware update for the my Deco router, after which I think I had one of three fail.  After that failure, I've not had any issues at all.  All three I have have not failed in quite a while and that's with regular boots of router and modem.