Cudy LT300 v3 OpenWrt Firmware

CPU: MediaTek MT7628AN
RAM: 64 MB
Flash: 16 MB

The Cudy LT300 v3 is supported by OpenWrt on the ramips/mt76x8 target. 2 firmware images are available from the official OpenWrt 25.12.5 stable release — download one below, or build a custom OpenWrt image for this device with your own package selection.

Specs

Specifications

CPU	MediaTek MT7628AN
CPU cores	1
CPU frequency	580 MHz
RAM	64 MB
Flash	16 MB
100 Mbit Ethernet ports	2
WLAN hardware	MediaTek MT7628AN

Hardware data from the OpenWrt Table of Hardware; verify against your unit before flashing.

Build matrix

Supported firmware versions

Distribution	Version	Target	Profile
OpenWrt	25.12.5	ramips/mt76x8	cudy_lt300-v3

Downloads

Download images

OpenWrt 25.12.5 · ramips/mt76x8

Image	Type	sha256
openwrt-25.12.5-ramips-mt76x8-cudy_lt300-v3-initramfs-kernel.bin Minimal kernel image, useful for first install or recovery.	kernel	ab5870bed040…
openwrt-25.12.5-ramips-mt76x8-cudy_lt300-v3-squashfs-sysupgrade.bin Not sure? Pick this if upgrading from OpenWrt.	sysupgrade	d2b8dd37026d…

Downloads are served by the official OpenWrt mirrors — unchanged upstream stable builds.

Packages & install

Default packages & installation

Default packages

Every image for the Cudy LT300 v3 ships these packages by default. The customize option below lets you add or remove packages before the image is assembled.

Device packages (4)

kmod-usb2 kmod-usb-ohci kmod-usb-net-rndis kmod-usb-serial-option

Target default packages (28)

apk-mbedtls base-files ca-bundle dnsmasq dropbear firewall4 fstools kmod-gpio-button-hotplug kmod-leds-gpio kmod-mt7603 kmod-nft-offload libc libgcc libustream-mbedtls logd mtd netifd nftables odhcp6c odhcpd-ipv6only ppp ppp-mod-pppoe swconfig uci uclient-fetch urandom-seed urngd wpad-basic-mbedtls

Installation notes

Already running OpenWrt or ImmortalWrt: flash the sysupgrade image from LuCI (System → Backup / Flash Firmware) or with the sysupgrade command.
The kernel / initramfs image boots from RAM without writing to flash — useful for a first install or for recovering from a failed flash.

Verify your download against the published checksum before flashing:

$ sha256sum openwrt-25.12.5-ramips-mt76x8-cudy_lt300-v3-initramfs-kernel.bin
ab5870bed040a16dd917237d96788703da8a5c122bd973bb9e22f05a1d4d4c43  openwrt-25.12.5-ramips-mt76x8-cudy_lt300-v3-initramfs-kernel.bin

Build custom firmware

Need more than the default image for the Cudy LT300 v3? Pick your packages — LuCI apps, themes, VPN clients — set the basics, and get a ready-to-flash OpenWrt image assembled from official packages in minutes.

Customize firmware for this device

More Cudy devices

More devices on ramips/mt76x8

Upstream

Upstream & source

Images are assembled from packages compiled and published by the upstream OpenWrt and ImmortalWrt projects. The complete corresponding source code is available from those projects under the GPL.