binwalk -e firmware.bin cd _firmware.bin.extracted unsquashfs squashfs-root # modify files inside squashfs-root mksquashfs squashfs-root new_squashfs.img -noappend -comp lzma # reassemble using dd and tools per original layout, then compute checksums

(Adjust the skip value based on binwalk output)

sendcmd 1 DB set WebSrvCfg 0 Enabled 1 sendcmd 1 DB save sys reboot Use code with caution.

Use dd to copy the SquashFS partition:

Set up a TFTP server on your PC containing the repacked firmware named upgrade.bin .

: If the repack has a single error or a mismatched header, the router may never boot again, requiring professional recovery tools.

In the bootloader command line, configure the network IPs and pull the firmware:

Used to transfer firmware files to the device via the bootloader. Step-by-Step Guide to Repacking ZTE F671Y Firmware

Some users note that switching to standard ZTE unbranded firmware causes a reduction in Wi-Fi throughput. This is resolved by manually setting the region parameters to match your local power regulations or forcing proper channel widths (80MHz/160MHz) within the network panel.

ZTE F671Y Firmware Update Repack: A Complete Modification and Flashing Guide

A computer equipped with a physical LAN port. Software Toolkit

Assume you have downloaded a file named zte_f671y_universal_repack.bin .