# Disable NB-IOT for mangOH yellow **URL:** \ **Category:** Uncategorized\ **Created:** [April 28, 2022, 7:12am UTC](https://mangoh.discourse.group/t/disable-nb-iot-for-mangoh-yellow/9951 "2022-04-28T07:12:26Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![norbertbrenner](https://avatars.discourse-cdn.com/v4/letter/n/58956e/32.png) [@norbertbrenner](https://mangoh.discourse.group/u/norbertbrenner)\ **Post date:** [April 28, 2022, 7:12am UTC](https://mangoh.discourse.group/t/disable-nb-iot-for-mangoh-yellow/9951/1 "2022-04-28T07:12:26Z")
We have the problem with our mangOH yellows that they connect in the US in several cases to NB-IOT. How we can bring a mangOHJ board that is running in the NB-IOT mode back to LTE-M1 or 2G? We have send the two following commands via Bluetooth to the board. AT!SELCIOT=2 AT!SELACQ=LTE-M1,GSM,LTE,LTE-NB1 After sending these two commands we have plugged the mangOH off from the power and plug it in again to have a complete restart. One of the boards has connected to LTE after that. But we have 5 more boards which does not connect to LTE or GSM after the restart. Do we need to reset a specific part of the mnagOH to bring it out of the NB-IOT loop? ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [April 28, 2022, 8:20am UTC](https://mangoh.discourse.group/t/disable-nb-iot-for-mangoh-yellow/9951/2 "2022-04-28T08:20:20Z")
Have you compared the at!band? Between ok and nok modules? Can it attach to gsm if you force it to gsm by at!selrat ---
**Author:** ![norbertbrenner](https://avatars.discourse-cdn.com/v4/letter/n/58956e/32.png) [@norbertbrenner](https://mangoh.discourse.group/u/norbertbrenner)\ **Post date:** [April 28, 2022, 8:37am UTC](https://mangoh.discourse.group/t/disable-nb-iot-for-mangoh-yellow/9951/3 "2022-04-28T08:37:50Z")
Have tested a second one and set the two AT commands. after that i send reboot now. The mangOH start up and connected to LTE and send data. Perhaps the reboot command was the key.