CZ.NIC Turris Omnia OpenWrt Firmware
The CZ.NIC Turris Omnia is supported by OpenWrt on the mvebu/cortexa9 target. 3 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/cortexa9 | cznic_turris-omnia |
Downloads
Download images
OpenWrt 25.12.5 · mvebu/cortexa9
| Image | Type | sha256 |
|---|---|---|
| openwrt-25.12.5-mvebu-cortexa9-cznic_turris-omnia-initramfs-kernel.bin Minimal kernel image, useful for first install or recovery. | kernel | 0f897e32be39… |
| openwrt-25.12.5-mvebu-cortexa9-cznic_turris-omnia-squashfs-sysupgrade.img.gz Not sure? Pick this if upgrading from OpenWrt. | sysupgrade | 4be2b0a8b57c… |
| openwrt-25.12.5-mvebu-cortexa9-cznic_turris-omnia-targz-rootfs.tar.gz Rootfs archive for Docker / LXC containers. | rootfs | c879b7a230bd… |
Downloads are served by the official OpenWrt mirrors — unchanged upstream stable builds.
Packages & install
Default packages & installation
Default packages
Every image for the CZ.NIC Turris Omnia ships these packages by default. The customize option below lets you add or remove packages before the image is assembled.
Device packages (19)
mkf2fs e2fsprogs kmod-fs-vfat kmod-nls-cp437 kmod-nls-iso8859-1 wpad-basic-mbedtls kmod-ath9k kmod-ath10k-ct ath10k-firmware-qca988x-ct kmod-mt7915-firmware partx-utils kmod-i2c-mux-pca954x kmod-leds-turris-omnia kmod-turris-omnia-mcu kmod-gpio-button-hotplug omnia-eeprom omnia-mcu-firmware omnia-mcutool kmod-dsa-mv88e6xxx
Target default packages (26)
apk-mbedtls base-files ca-bundle dnsmasq dropbear firewall4 fstools kmod-gpio-button-hotplug kmod-nft-offload libc libgcc libustream-mbedtls logd mtd netifd nftables odhcp6c odhcpd-ipv6only ppp ppp-mod-pppoe procd-ujail uboot-envtools uci uclient-fetch urandom-seed urngd
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-mvebu-cortexa9-cznic_turris-omnia-initramfs-kernel.bin 0f897e32be39ed503c97f3fe59c5197771ce602c68248c88f6b6c910d9449f2f openwrt-25.12.5-mvebu-cortexa9-cznic_turris-omnia-initramfs-kernel.bin
Build custom firmware
Need more than the default image for the CZ.NIC Turris Omnia? 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.