# Arduino MKR NB 1500 not connecting to LTE/NB network

**URL:** <https://forum.arduino.cc/t/arduino-mkr-nb-1500-not-connecting-to-lte-nb-network/1239116>\
**Category:** MKR NB 1500\
**Created:** [March 23, 2024, 8:15pm UTC](https://forum.arduino.cc/t/arduino-mkr-nb-1500-not-connecting-to-lte-nb-network/1239116 "2024-03-23T20:15:09Z")\
**Posts on this page:** 1\
**Showing post:** 2

<div class="post-metadata">

**Author:** ![intstarep](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/intstarep/32/238798_2.png) [@intstarep](https://forum.arduino.cc/u/intstarep)\
**Post date:** [March 24, 2024, 4:29pm UTC](https://forum.arduino.cc/t/arduino-mkr-nb-1500-not-connecting-to-lte-nb-network/1239116/2 "2024-03-24T16:29:44Z")

</div>

Hi Mark  
No worries for contacting me, I try to give all questions in the MKR1400 and MKR1500 an answer because I am also glad when i get help on other topics. That should be the open source spirit I assume ;=)  
TBH I turned away fromMKR1500 to MKR1400 because the global connectivity is better and I need just a small bandwidth so I will answer a bit from past memories..

The  
`+CEREG: 0,0`  
means the moblie network is not leting you in.  
First step: Please load the sketch NB Scan Networks from MKRNB Examples-\>Tools and paste the result here.

BTW: IMHO you need the latest available firmware, the soldering part is not that drastic, the heck is more with the windows software and the modem, see :

> [@Firmware upgrade for UBLOX SARA-R410M-02B on the MKR NB 1500 #2](https://forum.arduino.cc/t/firmware-upgrade-for-ublox-sara-r410m-02b-on-the-mkr-nb-1500-2/699292):
>
> A continuation of this topic: [Firmware upgrade for UBLOX SARA-R410M-02B on the MKR NB 1500 - MKRNB1500 - Arduino Forum](https://forum.arduino.cc/index.php?topic=628808.30) A new version of the firmware is available: [https://www.u-blox.com/en/ubx-viewer/view/SARA-R410M-02B-03\_PCN\_UBX-20058104?url=https%3A%2F%2Fwww.u-blox.com%2Fsites%2Fdefault%2Ffiles%2FSARA-R410M-02B-03\_PCN\_UBX-20058104.pdf](https://www.u-blox.com/en/ubx-viewer/view/SARA-R410M-02B-03_PCN_UBX-20058104?url=https%3A%2F%2Fwww.u-blox.com%2Fsites%2Fdefault%2Ffiles%2FSARA-R410M-02B-03_PCN_UBX-20058104.pdf) I also attached the .pdf. I have not tried it yet. Several things to note: "Old modules, this means modules running previous firmware revisions (before tha…

---

_[View the full topic](https://forum.arduino.cc/t/arduino-mkr-nb-1500-not-connecting-to-lte-nb-network/1239116)._