ASUS OnHub SRT-AC1900 OpenWrt Firmware
The ASUS OnHub SRT-AC1900 is supported by OpenWrt/ImmortalWrt on the ipq806x/chromium target. 6 firmware images are available from the official OpenWrt 25.12.5 and ImmortalWrt 25.12.1 stable releases — 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 | ipq806x/chromium | asus_onhub |
| ImmortalWrt | 25.12.1 | ipq806x/chromium | asus_onhub |
Downloads
Download images
OpenWrt 25.12.5 · ipq806x/chromium
| Image | Type | sha256 |
|---|---|---|
| openwrt-25.12.5-ipq806x-chromium-asus_onhub-squashfs-sysupgrade.bin Not sure? Pick this if upgrading from OpenWrt. | sysupgrade | 03ccd06c2066… |
| openwrt-25.12.5-ipq806x-chromium-asus_onhub-squashfs-factory.bin For first-time flash from stock firmware. | factory | 0899509e972a… |
| openwrt-25.12.5-ipq806x-chromium-asus_onhub-initramfs-fit-zImage.itb.vboot Minimal kernel image, useful for first install or recovery. | kernel | dfd725d4e4c0… |
ImmortalWrt 25.12.1 · ipq806x/chromium
| Image | Type | sha256 |
|---|---|---|
| immortalwrt-25.12.1-ipq806x-chromium-asus_onhub-initramfs-fit-zImage.itb.vboot Minimal kernel image, useful for first install or recovery. | kernel | e9c95d653b25… |
| immortalwrt-25.12.1-ipq806x-chromium-asus_onhub-squashfs-factory.bin For first-time flash from stock firmware. | factory | 36b45dda6300… |
| immortalwrt-25.12.1-ipq806x-chromium-asus_onhub-squashfs-sysupgrade.bin Not sure? Pick this if upgrading from OpenWrt. | sysupgrade | aae84930e132… |
Downloads are served by the official OpenWrt/ImmortalWrt mirrors — unchanged upstream stable builds.
Packages & install
Default packages & installation
Default packages
Every image for the ASUS OnHub SRT-AC1900 ships these packages by default. The customize option below lets you add or remove packages before the image is assembled.
OpenWrt 25.12.5 · ipq806x/chromium
Device packages (13)
ath10k-firmware-qca988x-ct e2fsprogs kmod-fs-ext4 losetup partx-utils mkf2fs kmod-fs-f2fs ucode kmod-google-firmware kmod-tpm-i2c-infineon kmod-sound-soc-ipq8064-storm kmod-usb-storage kmod-ramoops
Target default packages (37)
apk-mbedtls base-files ca-bundle dnsmasq dropbear firewall4 fstools kmod-ata-ahci kmod-ata-ahci-platform kmod-ath10k-ct kmod-gpio-button-hotplug kmod-leds-gpio kmod-nft-offload kmod-phy-qcom-ipq806x-usb kmod-usb-dwc3-qcom kmod-usb-ledtrig-usbport kmod-usb-ohci kmod-usb2 kmod-usb3 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 wpad-basic-mbedtls
ImmortalWrt 25.12.1 · ipq806x/chromium
Device packages (13)
ath10k-firmware-qca988x-ct e2fsprogs kmod-fs-ext4 losetup partx-utils mkf2fs kmod-fs-f2fs ucode kmod-google-firmware kmod-tpm-i2c-infineon kmod-sound-soc-ipq8064-storm kmod-usb-storage kmod-ramoops
Target default packages (44)
apk-openssl autocore automount base-files block-mount ca-bundle default-settings-chn dnsmasq-full dropbear firewall4 fstools kmod-ata-ahci kmod-ata-ahci-platform kmod-ath10k-ct kmod-gpio-button-hotplug kmod-leds-gpio kmod-nf-nathelper kmod-nft-offload kmod-phy-qcom-ipq806x-usb kmod-usb-dwc3-qcom kmod-usb-ledtrig-usbport kmod-usb-ohci kmod-usb2 kmod-usb3 libc libgcc libustream-openssl logd luci luci-app-cpufreq mtd netifd nftables odhcp6c odhcpd-ipv6only ppp ppp-mod-pppoe procd-ujail uboot-envtools uci uclient-fetch urandom-seed urngd wpad-openssl
Installation notes
- First install from stock firmware: flash the factoryimage through the vendor firmware's upgrade page or recovery mode.
- 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-ipq806x-chromium-asus_onhub-squashfs-sysupgrade.bin 03ccd06c2066697703975e2299720ee390032caa843c902ef17e04c9bd4cb796 openwrt-25.12.5-ipq806x-chromium-asus_onhub-squashfs-sysupgrade.bin
Build custom firmware
Need more than the default image for the ASUS OnHub SRT-AC1900? 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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More devices on ipq806x/chromium
Upstream
Upstream & source
- downloads.openwrt.org — ipq806x/chromium 25.12.5
- downloads.immortalwrt.org — ipq806x/chromium 25.12.1
- OpenWrt Table of Hardware
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.