A very specific and technical topic!
A common goal for repacking is to enable "universal" SIM support or to customize the Web UI. Interception : Users often use the TPST (Terminal Product Support Tool) to flash images. Fastboot Mode alcatel mw40v firmware repack
The MW40V often has a hidden ADB daemon. By modifying the init scripts (typically found in /etc/init.d or inside the boot.img ramdisk), you can ensure ADB is enabled by default on boot. A very specific and technical topic