OpenWrt 21.02.1 - Service Release - 25 October 2021

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 OpenWrt 21.02.1, r16325-88151b8303

The OpenWrt community is proud to announce the first service release of OpenWrt 21.02. It fixes security issues, improves device support, and brings a few bug fixes.

The OpenWrt project is a Linux operating system targeting embedded devices. It is a complete replacement for the vendor-supplied firmware of a wide range of wireless routers and non-network devices. See the Table of Hardware for supported devices. For more information about OpenWrt project organization, see the About OpenWrt pages.

Get OpenWrt firmware images at: or use the firmware selector at:

Do you want to be informed about important changes such as new releases and security fixes?

We have a new mailing list for this, as well as RSS options: see Important changes and announcements.

Only the main changes are listed below. See changelog-21.02.1 for the full changelog.

  • Fix Let's Encrypt certificate handling in WolfSSL
  • Fix sysupgrade for Mikrotik targets
  • Fix sysupgrade for Rockchip target when using squashfs
  • Add support for iEi Puzzle-M901/Puzzle-M902
  • Add build system support for Python 3.10
  • Fix which handling on Fedora and MacOS build systems
  • Add Tmux terminfo
  • Update Linux kernel from 5.4.143 to 5.4.154
  • Update mac80211 from 5.10.42 to 5.10.68
  • Update ath10k-ct to 2021-09-22
  • Update wolfssl from 4.7.0 to 4.8.1
  • None
  • Some IPv6 packets are dropped when software flow offloading is used: FS#3373
    • As a workaround, do not activate software flow offloading, it is deactivate by default.
  • The menu bar in LuCI is wrongly aligned
    • If this is a real problem for you update the LuCI theme: opkg upgrade luci-theme-bootstrap

Upgrading from OpenWrt 21.02.0 is straightforward thanks to the sysupgrade utility: sysupgrade from web interface or sysupgrade from command-line.

An upgrade from OpenWrt 19.07 to OpenWrt 21.02 is supported in many cases, including preserving configuration. A configuration backup is advised nonetheless when upgrading from OpenWrt 19.07.

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  • Last modified: 2021/11/20 20:38
  • by daniel