Can't change MBN Settings on Mi10


May 27, 2023
Hi, as title, when using the "MBN config loading and activing tool" after entering *#*#663368378#*#* on the dialer, I'm not able to change the MBN. After choosing one and clicking on validate it stays on the default one and doesn't change.
I have a Mi10 and I'm running the latest Xiaomi.EU stable. Is there anything I can do to make it update my default MBN? Is there a reason it isn't working and can I fix in any way? Thanks.