Log in with the default credentials (often admin / admin or found on the device sticker).
Possibly. But try on the PCB to force EDL mode (search “ZTE MF65 test point edl”). This requires soldering skills. vodafone m028t firmware full download
Connect via WiFi or USB and go to 192.168.0.1 (or the IP listed on the device sticker). Log in with the default credentials (often admin