Wait 3–5 minutes. The router will reboot automatically. Do NOT power off during writing. After reboot, perform a 30-30-30 reset: Hold reset for 30 seconds while powered, keep holding while unplugging for 30 seconds, keep holding while plugging back in for 30 seconds. This clears old NVRAM settings that might conflict. The Danger Zone: Unlocking Carrier-Locked ZTE Routers A huge reason people search for a ZTE router flash tool is to unlock a router to accept any SIM card. For example, the ZTE MF286D or ZTE MC801A often come locked to T-Mobile, Telstra, or Vodafone.
flash -noheader 192.168.1.10:firmware.bin flash0.trx (Replace firmware.bin with your filename and flash0.trx with the correct partition name—varies per model). zte router flash tool