TL-MR6400 4G doesn't connect to mobile 4G band
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Hi,
I bought a TL-MR6400 and doesn't connect to mobile 4G band.
No possibility to set manual band (error 89534), nor set 4G only (error code 1 - internal error).
I tried all firmware versions available on official website.
I read several threads on forum without solving.
Last ISP file is outdated compared to firmware versione.
Sim is OK and tested on other devices.
Router hw version 5.30 - EU
I have 5 TL-MR6400 , two with hardware V.1 and three with 5.0 : with these no problems, but with the last one (v. 5.3) I can't get connection.
System log:
| 1 | 2025-06-26 13:58:20 | 4G | Information | ERROR: QMI NAS Set preferred network failed, ret = 0. |
| 2 | 2025-06-26 13:57:31 | 4G | Information | ERROR: [band scan] Set pref net failed for pci scan!!! |
| 3 | 2025-06-26 13:57:31 | 4G | Information | ERROR: QMI NAS Set preferred network failed, ret = 0. |
| 4 | 2025-06-26 13:57:17 | SYSTEM | Information | User(Mac:00:1D:72:EA:14:11;IP:192.168.1.2) logs in.
|
In menu advanced\network\internet after checking sim, the status is disconnected
In advanced\status the network type is "no service"
How can I solve ?
thank you
@Joseph-TP Hi, here are the screenshots :
if SET “4g only”
IF SET “MANUAL BAND”
IF NETWORK SEARCH MANUAL
Hi@CLA-ATR,
Thank you for getting back to me.
Please hard reset the TL-MR6400:
Press and hold WPS/RESET button until the Power LED starts flashing to reset the router to its factory default settings
Have you created a new profile for a try? Please set the APN Type to Dynamic.
Then go to change to the new profile at the Profile Name option.
If it still doesn't work, contact your retailer for a replacement.