After flashing or unlocking, remove the battery from your MiFi for 10 seconds (a hard reboot). Reassemble, insert a non-original SIM card, and power on. Your device should now be carrier-free.
If you’ve landed here, you’ve probably got a dusty MiFi device sitting on your desk—or you’re staring at a locked dashboard that says “SIM not supported.” Mifi Tool 1.0.0.3 Free Download