Marvell ESPRESSObin Ultra OpenWrt Firmware
The Marvell ESPRESSObin Ultra is supported by OpenWrt on the mvebu/cortexa53 target. 4 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.
Build matrix
Supported firmware versions
| Distribution | Version | Target | Profile |
|---|---|---|---|
| OpenWrt | 25.12.5 | mvebu/cortexa53 | globalscale_espressobin-ultra |
Downloads
Download images
OpenWrt 25.12.5 · mvebu/cortexa53
| Image | Type | sha256 |
|---|---|---|
| openwrt-25.12.5-mvebu-cortexa53-globalscale_espressobin-ultra-ext4-sdcard.img.gz Disk image to write onto an SD card. | sdcard | aad98f1e3f5a… |
| openwrt-25.12.5-mvebu-cortexa53-globalscale_espressobin-ultra-targz-rootfs.tar.gz Rootfs archive for Docker / LXC containers. | rootfs | 2fb0a7e5ec06… |
| openwrt-25.12.5-mvebu-cortexa53-globalscale_espressobin-ultra-squashfs-sdcard.img.gz Disk image to write onto an SD card. | sdcard | cc8d9acaaa76… |
| openwrt-25.12.5-mvebu-cortexa53-globalscale_espressobin-ultra-initramfs-kernel.bin Minimal kernel image, useful for first install or recovery. | kernel | 0154f926a351… |
Downloads are served by the official OpenWrt mirrors — unchanged upstream stable builds.
Packages & install
Default packages & installation
Default packages
Every image for the Marvell ESPRESSObin Ultra ships these packages by default. The customize option below lets you add or remove packages before the image is assembled.
Device packages (3)
kmod-i2c-pxa kmod-rtc-pcf8563 kmod-dsa-mv88e6xxx
Target default packages (30)
apk-mbedtls base-files ca-bundle dnsmasq dropbear e2fsprogs ethtool firewall4 fstools kmod-gpio-button-hotplug kmod-nft-offload libc libgcc libustream-mbedtls logd mkf2fs mtd netifd nftables odhcp6c odhcpd-ipv6only partx-utils ppp ppp-mod-pppoe procd-ujail uboot-envtools uci uclient-fetch urandom-seed urngd
Installation notes
- 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-mvebu-cortexa53-globalscale_espressobin-ultra-ext4-sdcard.img.gz aad98f1e3f5a0d9629d47e1552ff476b41b117e4674b9f4ccd5e330293d3684a openwrt-25.12.5-mvebu-cortexa53-globalscale_espressobin-ultra-ext4-sdcard.img.gz
Build custom firmware
Need more than the default image for the Marvell ESPRESSObin Ultra? 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 deviceRelated
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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.