TL-MR6400 constantly resetting itself

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TL-MR6400 constantly resetting itself

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TL-MR6400 constantly resetting itself
TL-MR6400 constantly resetting itself
2019-11-01 05:57:23
Model: TL-MR6400  
Hardware Version: V3
Firmware Version: 1.6.0 0.9.1 v0001.0 Build 181022 Rel.40644n

The router is using an LTE sim and is connecting mostly via 3G (no LTE in our area). 

 

It resets itself several times per day losing all settings and reverting to its default configuration. 

 

What could be causing this? 

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#1
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4 Reply
Re:TL-MR6400 constantly resetting itself
2019-11-02 16:19:33

@Diversions 

 

To add mroe info, here is a copy of the log immediately after it resets. 

 

2016-01-01 08:00:26 [5] 3G: init LTE module, set flowstat [enableDataLimit 0, enablePaymentDay 0, paymentDay 1, limitation 0, warningPercent 90]
2016-01-01 08:00:26 [5] 3G: LTE Module: profile num [2], default profile [2], active profile [0]
2016-01-01 08:00:26 [5] 3G: DM: profile num [2], default profile [2], active profile [0]
2016-01-01 08:00:26 [6] 3G: USER: Connected to the network!

2016-01-01 08:00:27 [5] System: Enable firewall
2016-01-01 08:00:28 [5] DHCPC: Send DISCOVER with request ip 0.0.0.0 and unicast flag 0
2016-01-01 08:00:31 [5] DHCPC: Send DISCOVER with request ip 0.0.0.0 and unicast flag 0
2016-01-01 08:00:34 [5] DHCPC: Send DISCOVER with request ip 0.0.0.0 and unicast flag 0
2016-01-01 08:00:35 [5] 3G: LTE internet connected.
2019-11-03 00:00:17 [5] DHCPC: Send DISCOVER with request ip 0.0.0.0 and unicast flag 1
2019-11-03 00:00:21 [5] DHCPC: Send DISCOVER with request ip 0.0.0.0 and unicast flag 1
2019-11-03 00:00:23 [5] DHCPD: Recv DISCOVER from 9C:64:8B:C4:E7:8B
2019-11-03 00:00:23 [5] DHCPD: Send OFFER with ip 192.168.1.100
2019-11-03 00:00:23 [5] DHCPC: Recv no OFFER, DHCP Service unavailable
2019-11-03 00:00:24 [5] DHCPD: Recv REQUEST from 9C:64:8B:C4:E7:8B
2019-11-03 00:00:24 [5] DHCPD: Send ACK to 192.168.1.100
2019-11-03 00:00:26 [5] DHCPD: Recv DISCOVER from 28:CF:E9:5E:94:F9

 

Help. 

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#2
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Re:TL-MR6400 constantly resetting itself
2019-11-04 09:53:27 - last edited 2019-11-04 09:54:16

@Diversions 

 

Please use the original power adapter.

 

What is the led status of this TL-MR6400 when it reset itself automatically? 

 

Have you had this issue before? When did you buy this router? 

 

Have you ever tried to reset it manually and reconfigure it to give it a go? 

 

Besides, try to change another sim card. 

 

Any updates, please let us know. 

 

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#3
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Re:TL-MR6400 constantly resetting itself
2019-11-07 03:20:32

@Kevin_Z 

 

Thank you for your response.

 

1. I am using original adapter. 

2. No, this is the first time I've been having this issue.

3. I bought this router on 28 December 2018. 

4. Yes, I've reset it manually back to factory settings and reconfigured it again, manually. I've kept a copy of the config so that whenever it resets itself, I can just restore from the backup. 

5. Yes, I've swapped two different sim cards, same thing would still happen. 

 

 

Two days ago, I found an unknown android device connected to the router. I have a secure password that I never give out, but I still found an android device logged in. I blocked this device based on MAC address and it has not reset since then. 

 

I think this router has vulnerabilities that allow it to be logged in despite security. So far it's been running fine for 48 hours now without problems ever since I banned the MAC address. 

 

Hmmm. Not a very good sign. Never had this problem with my other routers (different brand). 

 

*T

 

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#4
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Re:TL-MR6400 constantly resetting itself
2019-11-07 07:05:01

@Diversions 

 

For the unknown Android device issue, we have not received any similar feedback, and generally speaking, the wireless devices need password to connect to the wifi network. 

 

You can verify who it belongs to by its mac address; 

 

Besides, if the router reset itself again, please do not restore the configuration file, instead, try to set it up manually. After that you can take some time to test the performance. 

 

Good day. 

 

Nice to Meet You in Our TP-Link Community. Check Out the Latest Posts: Connect TP-Link Archer BE550 to Germany's DS-Lite (Dual Stack Lite) Internet via WAN Archer GE550 - BE9300 Tri-Band Wi-Fi 7 Gaming Router EasyMesh Is Available When Wi-Fi Routers Work in AP Mode as A Controller. Archer AX55V2 Supports WireGuard VPN, EasyMesh Ethernet Backhaul, IoT Network, Speed Limit,and More If you found a post or response helpful, please click Helpful (arrow pointing upward icon). If you are the author of a topic, remember to mark a helpful reply as the "Recommended Solution" (star icon) so that others can benefit from it.
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