Introduction

  1. Download a TFTP server (e.g., tftpd64 for Windows) and the correct firmware renamed to zte.bin.
  2. Set your PC's IP to 192.168.0.100 as before.
  3. Launch TFTP server and set the directory to where zte.bin is located.
  4. Power off the MC801A. Hold down the WPS button (or sometimes the Reset button – check your variant). While holding, power on.
  5. Watch the TFTP server console. If successful, you'll see a request for zte.bin and a transfer progress bar. This takes 1 minute.
  6. Release the button once transfer completes. The router will flash the firmware from memory and reboot.

Common post-flash issues:

Not recommended for average users.

Navigate to Updates: Go to Advanced Settings > Update (or Device Settings > Update Management depending on your firmware version).

before flashing a new one to prevent a "no-service" error, as specific configuration files are unique to your unit.

Part 8: Frequently Asked Questions

Will flashing remove the SIM lock?

Yes, in 90% of cases. Generic firmware ignores the carrier's SIM lock database. However, if the lock is in the NVRAM (non-volatile memory), you may need to use QPST to rewrite the NV values.

To flash new software, the router must be in a state where it can accept data overwrites. This is often done by: Using a software command via ADB (Android Debug Bridge). Holding specific reset buttons while powering on.