Reset default of AT!NVPLMN

IoT Modules MC/EM Series
1

in EM9191 i have set the AT!NVPLMN. Is there any way to reset it?
modem is set a MCC,MNC pair using AT!NVPLMN doest it mean this modem will work only on that PLMN ? any way to revert ?

Thanks.

2

have you tried with different operator and see if it only locks to particular PLMN?

3

Thanks for the input @jyijyi , The is one think i should try.

I dont have a different carrier sim currently to try. i will have to try that out. will update once i try with different carrier other than the one in which i locked it out.