I have a nokia lumia 521 which is locked to T-Mobile USA, every effort to unlock it as been in vain. I would love to know, will the sim lock be removed if I flash a new firmware. Thanks in advance
I have a nokia lumia 521 which is locked to T-Mobile USA, every effort to unlock it as been in vain. I would love to know, will the sim lock be removed if I flash a new firmware. Thanks in advance
I have a nokia lumia 521 which is locked to T-Mobile USA, every effort to unlock it as been in vain. I would love to know, will the sim lock be removed if I flash a new firmware. Thanks in advance
What if I format it with firmware that is not meant for T-Mobile
Lock status can be read/changed via firmware but actually resides on the motherboard. Changing firmware won't affect it.
Are you the original owner?
No one will be able to unlock it if it does not meet the requirements T-Mo has set. https://support.t-mobile.com/docs/DOC-1588