Bricked TP MR6400 V5.2

Installing and Using OpenWrt
1

This is my first post here and im new to openWRT,

So i got this LTE router
I installed openWRT on it, the latest package, it worked and i was able to log in to web interface etc
however LTE wasnt working, so i started playing with the settings and i think i changed firewall settings on bridge connection
since than im not able to reach web interface
i can ping 192.168.1.1 but when going there from browser its telling me that i can not connect
tried ssh to 192.168.1.1 but it saying connection refused on port 22
i played with firewall and have a rule for port 22 no changes
even disabling firewall all together doesnt help, still same issue
however for some reason when i tried to ping 192.168.1.1 i was getting reply from 192.168.1.95 ip saying that host is not reachable, so i tried ssh to 192.168.1.95 - i can reach that ip but i can not log in with the password i set - im sure i type in correct password - not really sure if that is the ip i should ssh to
im doing this without any external network connected, laptop is offline and only connected to router by lan cable

any idea how to unbrick it?
i use windows 7 system and im new to open software
i can follow the instructions np :slight_smile:
any advise is appreciated
Thank you

2
3 Likes
3

Checking this right now, thank you.

4

Hard reset helped, thank you.
I can log in via web interface or ssh

However i still cant get LTE modem to work...
I did not find any good guide how to set it up from scratch
I have uqmi installed and other packages that are advised in other forum posts but still cant get it working
any idea?
Thank you

5

if you followed the wiki when you installed, you simply didn't read far enough :slight_smile:

2 Likes
6

checking now

1 Like
7

I went through that guide, however none of the commands work for me, gives me no output....
im not sure if i not understand it correctly
i dont even have some of the interfaces

Interfaces

lan

Type: Bridge
Device: br-lan
Connected: yes
MAC: xxx
RX: 915.35 KB (5694 Pkts.)
TX: 5.53 MB (6421 Pkts.)

Type:* Software VLAN
Device: eth0.1
Connected: yes
MAC: xxx
RX: 915.51 KB (5696 Pkts.)
TX: 5.63 MB (8170 Pkts.))
br-lan Protocol: Static address
Uptime: 0h 54m 21s
MAC: xxx
RX: 915.35 KB (5694 Pkts.)
TX: 5.53 MB (6421 Pkts.)
IPv4: 192.168.1.1/24
IPv6: fd53:ab77:cea0::1/60 RestartStopEditDelete
wan

)Type: Software VLAN
Device: eth0.2
Connected: yes
MAC: xxx
RX: 0 B (0 Pkts.)
TX: 378.32 KB (1139 Pkts.)
eth0.2 Protocol: DHCP client
MAC: xxx
RX: 0 B (0 Pkts.)
TX: 378.32 KB (1139 Pkts.) RestartStopEditDelete
wan6

Type: Software VLAN
Device: eth0.2
Connected: yes
MAC: xxx
RX: 0 B (0 Pkts.)
TX: 378.32 KB (1139 Pkts.)
eth0.2 Protocol: DHCPv6 client
MAC: xxx
RX: 0 B (0 Pkts.)
TX: 378.32 KB (1139 Pkts.) RestartStopEditDelete

Devices

|Device|Type|MAC Address|MTU||
Type: Bridge
Device: br-lan
Connected: yes
MAC:
RX: 221.03 KB (1354 Pkts.)
TX: 587.61 KB (1384 Pkts.)br-lan|Bridge

Type: Ethernet Switch
Device: eth0
Connected: yes
MAC: xxx
RX: 259.62 KB (1504 Pkts.)
TX: 634.60 KB (1634 Pkts.)eth0|Network

Type: Switch VLAN
Device: eth0.1
Connected: yes
MAC: xxx
RX: 221.19 KB (1356 Pkts.)
TX: 593.98 KB (1505 Pkts.)eth0.1|VLAN (802.1q)|xxx|1500|Configureā€¦Unconfigure|

Type: Switch VLAN
Device: eth0.2
Connected: yes
MAC: xxx
RX: 0 B (0 Pkts.)
TX: 32.28 KB (111 Pkts.)eth0.2|VLAN (802.1q)|xxx|1500|Configureā€¦Unconfigure|

Type: Ethernet Adapter
Device: wwan0
Connected: no
MAC: xxx
RX: 0 B (0 Pkts.)
TX: 826 B (7 Pkts.)wwan0|Network device|xxx|1500|

im not sure what im missing....

8

that C&P is useless, don't do them.

reset
install the luci-proto-qmi package
add the following to the /etc/config/network file

config interface 'wwan'
        option proto 'qmi'
        option device '/dev/cdc-wdm0'
        option apn 'internet'
        option pdptype 'ip'
        option dhcp '0'

adjust the APN name above, if needed.
reboot, and keep fingers crossed.

if it fails, create a new thread.

9

when i try to install or update any of the packages i get error:
Failed to send: Operation not permitted.

im executing:
opkg update
opkg install luci-proto-qmi

10

does your router have internet access, when the LTE modem's offline ?

11

yes its connect to the laptop by lan cable, laptop has internet access

12

does the laptop's internet access go via the MR6400 ?

13

no, its connected to home wifi

14

then why are you answering "yes" to the question above ?

15

should it not have access through laptop and home wifi? how it can be connected to internet other way?

16

you're not answering the question.

did you configure it accordingly ?

use https://firmware-selector.openwrt.org/?version=24.10.0&target=ramips%2Fmt76x8&id=tplink_tl-mr6400-v5
click the tiny arrow and add luci-proto-qmi to the list of packages.
click request build, and DL the sysupgrade image once generated.
flash the router again.

btw the LTE supporting packages seem to be shipping with the default image, pasting the wwan entry into the network file should be enough to get internet going, as long as the APN is set.

17

thank you, will look into it
appreciated

18

I got it sorted i think....
Nee to wait for new sim to test it but i guess this topic can be closed now.
Thank you for your help

19

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