Wait for the progress bar to complete. Do not disconnect the dongle during this phase, as disconnecting it can permanently corrupt the smart card.

This guide covers what the UMT Card Manager is, why it is essential, and how to navigate the GSM-Forum for the latest support.

Are you getting the error "Please use Card Manager to update card" when trying to open UMT modules? This happens because your card firmware or counters are out of date. Steps to Fix:

I can provide the exact steps or driver files needed to get your device working again. Share public link