Show pagesourceOld revisionsBacklinksBack to top × Table of Contents Upgrading OpenWrt firmware using LuCI and CLI How the OpenWrt upgrade works Upgrade steps 1. Prepare 2. Upgrade 3. Post Install Configuration, Setup or Restore Preparing for upgrade Can you keep settings? Will you need to revert? Configure your backup Downloading the OpenWrt upgrade image Upgrade procedure For LuCI-based upgrades Command-line instructions Extras Verify the new OS version Upgrade installed packages Reinstall user-installed packages Configure user-installed packages Upgrading OpenWrt firmware using LuCI and CLI See also: OpenWrt flash Layout Upgrading OpenWrt firmware using CLI Upgrading OpenWrt firmware using LuCI Keep Settings and Upgrade Compatibility Saving/restoring user-installed packages How the OpenWrt upgrade works An OpenWrt sysupgrade will replace the entire current OpenWrt installation with a new version. This includes the Linux kernel and SquashFS/ext4/ubifs/JFFS2/other OS partition/s. This is NOT the same as a first time installation (factory). Sysupgrade via LuCI or CLI works by optionally saving specified configuration files, wiping the entire file system, installing the new version of OpenWrt and then restoring back the saved configuration files. This means that any parts of the file system that are not specifically saved will be lost. In particular, any manually installed software packages you may have installed after the initial OpenWrt installation have to be reinstalled after an OpenWrt upgrade. That way everything will match, e.g. the updated Linux kernel and any installed kernel modules. Any configuration files or data files placed in locations not specifically listed as being preserved below will also be lost in an OpenWrt upgrade. Be sure to check any files you have added or customized from a default OpenWrt install to back up these items before an upgrade. See this howto about extroot procedure. For Dual Firmware Devices please consult your device page for additional information. By compiling your own custom image with an OpenWrt buildroot or generating with the imagebuilder, it is possible to remove the need to perform many of the steps above. Upgrade steps 1. Prepare The first part of the upgrade process is to prepare for the upgrade. Setup for data migration ( keep settings ) and additional sysupgrade.conf entries Export / save installed package list / manifest Obtain / verify new installation sysupgrade image (and current / known good one to revert to) This includes documenting programs and settings that will need to be re-installed or restored after the upgrade, locating and downloading the correct OpenWrt upgrade image for your hardware. When it is possible to 'keep settings' sysupgrade will automatically preserve much of the OpenWrt OS configuration by saving and then restoring configuration files in specific common locations (including /etc/config). This will preserve things like OpenWrt network settings, Wi-Fi settings, the device hostname, and so on. Some data files and directories for additional services will need to be configured manually. 2. Upgrade Next is the actual upgrade. The two common upgrade methods to perform the upgrade are: LuCI web interface System → Backup / Flash Firmware → “Flash new firmware image” Command-line using sysupgrade command over console or ssh Both use the same ...sysupgrade.bin/img.gz file (more below). 3. Post Install Configuration, Setup or Restore After the OS upgrade, there are usually some additional configuration steps required to; Re-install additional packages not part of the base OpenWrt install Configure new OpenWrt functionality or to Update configuration files to reflect new settings or updated packages Please see the section below with more details. Preparing for upgrade Can you keep settings? See also: Upgrade compatibility Most of the time you can, jumping several versions, downgrading, if the release notes or upgrade message informs you it's not possible, then you will need to plan ahead of time and factor in the time and information required to re-apply some or most of your previous configuration manually. It is worthwhile not keeping settings once every 12-16 months Trying to get around the advice to start with new settings when needed can result in odd issues that can be difficult to troubleshoot Will you need to revert? A time may come when you attempt an upgrade and for whatever reason it is unsuccessful. Contingency planning is a good skill for anything in IT. Have you made a backup of your current settings? (for restoration to same or earlier OS versions) Do you have a copy of your current (pre-upgrade) OS version if you need to re-install? (both factory and sysupgrade or even vendor firmware may be required) Do you have a spare device in case things go pear shaped or you need much more time than expected? Configure your backup Follow Backup and restore, or skip this section if you do not want to preserve existing configuration. Downloading the OpenWrt upgrade image Getting the right image In most cases, platforms that support sysupgrade, have a downloadable image labelled ...-sysupgrade.bin ... Images labelled “factory” or otherwise are generally not intended to be installed via an existing OpenWrt web interface. FIRMWARE SELECTOR https://firmware-selector.openwrt.org/ SEARCH USING MODEL: Table of Hardware: Firmware downloads OFFICIAL DOWNLOAD PAGE: https://downloads.openwrt.org/releases/ OpenWrt on x86 For x86 use the same image you used to install OpenWrt as a sysupgrade image as well. So if you installed OpenWrt x86-64 openwrt-version-number-x86-64-combined-ext4.img.gz you need to choose same image to do a sysupgrade if you installed Openwrt with openwrt-version-number-x86-64-combined-squashfs.img.gz you need that image to do a firmware upgrade. WARNING: Double check you have the exact model number and in some cases country... If in any doubt about compatibility, read instructions on your device page thoroughly. If your are still unsure ask on the Forum. NOTE: Keep a copy of images you use, you never know if you may need them again and that may be difficult if your internet is down! Upgrade procedure For LuCI-based upgrades See also: Upgrading OpenWrt firmware using LuCI Download the desired upgrade file to your PC using a web browser Proceed to the LuCI upgrade procedure, below Web interface instructions Navigate to LuCI → System → Backup / Flash Firmware → Actions: Flash new firmware image. Click Choose File button to select firmware image. Click Flash image... to upload firmware image. Verify firmware image checksum and proceed. Wait until the router comes back online. Command-line instructions OpenWrt provides sysupgrade utility for firmware upgrade procedure. See CLI instructions page below: Upgrading OpenWrt firmware using CLI For sysupgrade cli based upgrades Download the desired upgrade file to the local /tmp RAM drive on your OpenWrt system. The /tmp directory is stored in RAM (using tmpfs), not in the permanent flash storage. # example downloading the OpenWrt 15.05 upgrade image for a TP-LINK TL-WR1043ND ver. 1.x router cd /tmp wget http://downloads.openwrt.org/chaos_calmer/15.05/ar71xx/generic/openwrt-15.05-ar71xx-generic-tl-wr1043nd-v1-squashfs-sysupgrade.bin # check the integrity of the image file via md5sums (older images) wget http://downloads.openwrt.org/chaos_calmer/15.05/ar71xx/generic/md5sums md5sum -c md5sums 2> /dev/null | grep OK # check the integrity of the image file via sha256sums wget http://downloads.openwrt.org/chaos_calmer/15.05/ar71xx/generic/sha256sums sha256sum -c sha256sums 2> /dev/null | grep OK # the desired result is that the downloaded firmware filename is listed with "OK" afterwards #################################################### # Initiate sysupgrade with your desired options # by default ( no -n ) settings are kept #################################################### sysupgrade -v /tmp/openwrt-15.05-ar71xx-generic-tl-wr1043nd-v1-squashfs-sysupgrade.bin NOTE: see extras at end of page for low memory device workarounds Extras Verify the new OS version In LuCI, go to Status > Overview to verify you are running the new OpenWrt release In SSH, the login banner has the release information Upgrade installed packages Follow: Upgrading packages After the initial update, it is good to check for any updated packages released after the base OS firmware image was built. Note that on a device with only 4MB of NVRAM, these updates may not fit – check free space first with df -h / and ensure there is at least 600KB or so free. Reinstall user-installed packages See also: Preserving packages After a successful upgrade, you will need to reinstall all previously installed and saved packages. Configure user-installed packages See also: Comparing configurations The new package installations will have installed new, default versions of package configuration files. If existing configuration files are in place, opkg displays a warning about this and saves the new configuration file versions under /etc/config/*-opkg filenames. The new package-provided config files should be compared with your older customized files to merge in any new options or changes of syntax. The diff tool is helpful for this. This website uses cookies. By using the website, you agree with storing cookies on your computer. 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