: Always back up your current configuration, specifically the XQCN and CONFIG files, to recover the device if the process fails. Firmware Flashing Methods
This report covers the technical background, benefits, and general procedures for installing "no brand" (unbranded/generic) firmware on the 4G portable router. 1. Technical Overview of zte mf90 firmware no brand
Good luck, and enjoy your newly unbranded ZTE MF90! : Always back up your current configuration, specifically
If you already have generic firmware and simply want the latest version: specifically the XQCN and CONFIG files
: Generic firmware is often lighter and lacks the tracking or advertising software sometimes included by telcos.
If your primary goal is to use different SIM cards, you may only need to unlock the device rather than fully flashing new firmware: