Olimex A20-OLinuXino-LIME OpenWrt Firmware
- CPU
- Allwinner A20
- RAM
- 512 MB
- Flash
- microSD
The Olimex A20-OLinuXino-LIME is supported by OpenWrt on the sunxi/cortexa7 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.
Specs
Specifications
| CPU | Allwinner A20 |
|---|---|
| CPU cores | 2 |
| CPU frequency | 1000 MHz |
| RAM | 512 MB |
| Flash | microSD |
| 100 Mbit Ethernet ports | 1 |
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 | sunxi/cortexa7 | olimex_a20-olinuxino-lime |
Downloads
Download images
OpenWrt 25.12.5 · sunxi/cortexa7
| Image | Type | sha256 |
|---|---|---|
| openwrt-25.12.5-sunxi-cortexa7-olimex_a20-olinuxino-lime-squashfs-sdcard.img.gz Disk image to write onto an SD card. | sdcard | d8f42c40fc4f… |
| openwrt-25.12.5-sunxi-cortexa7-olimex_a20-olinuxino-lime-initramfs-kernel.bin Minimal kernel image, useful for first install or recovery. | kernel | 510b229e315a… |
| openwrt-25.12.5-sunxi-cortexa7-olimex_a20-olinuxino-lime-ext4-sdcard.img.gz Disk image to write onto an SD card. | sdcard | e8701d247eb2… |
Downloads are served by the official OpenWrt mirrors — unchanged upstream stable builds.
Packages & install
Default packages & installation
Default packages
Every image for the Olimex A20-OLinuXino-LIME ships these packages by default. The customize option below lets you add or remove packages before the image is assembled.
Device packages (2)
kmod-ata-sunxi kmod-rtc-sunxi
Target default packages (28)
apk-mbedtls base-files ca-bundle dnsmasq dropbear e2fsprogs firewall4 fstools 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-sunxi-cortexa7-olimex_a20-olinuxino-lime-squashfs-sdcard.img.gz d8f42c40fc4fa0d750ea24f3fd381c3419619856e8700763bad8b6e6fa6c3fe5 openwrt-25.12.5-sunxi-cortexa7-olimex_a20-olinuxino-lime-squashfs-sdcard.img.gz
Build custom firmware
Need more than the default image for the Olimex A20-OLinuXino-LIME? 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
Related devices
More Olimex devices
- Olimex A10-OLinuXino-LIME OpenWrt firmware
- Olimex A13-OLinuXino OpenWrt firmware
- Olimex A20-OLinuXino-LIME2 OpenWrt firmware
- Olimex A20-OLinuXino-LIME2 eMMC OpenWrt firmware
- Olimex A20-OLinuXino-MICRO OpenWrt firmware
- Olimex A64-Olinuxino OpenWrt firmware
- Olimex A64-Olinuxino eMMC OpenWrt firmware
- Olimex OLinuXino Maxi OpenWrt firmware
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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.