If you are a verified business partner, request the Generic SW Package for MF90 - Neutral Operator.
The ZTE MF90 has sub-models:
Check the label under the battery:
Look for MF90_xxxx (e.g., MF90_TELSTRA, MF90_GENERIC). zte mf90 firmware no brand
Generic firmware does not remove a SIM lock by itself (that requires an unlock code), but it prevents the lock from re-applying. More importantly, it allows you to enter unlock codes via a standard USSD or web menu, which branded firmware often hides. If you are a verified business partner, request