Update Jan 2023: I have written an updated article on doing a sysupgrade from older OpenWrt versions to 19.x. If you want to do an in-place sysupgrade of a 19.x or earlier snapshot, use the instructions from the newer article, but selecting a snapshot image instead of a stable release image. Although stables releases of … OpenWrt: Upgrading OpenWrt to the latest snapshot build
Flashing the firmware of the Linksys WRT1X00AC/S is well documented on the OpenWrt wiki. So I don’t feel the need to go over the architectural concepts in this article, but I did want to provide instructions for the Ubuntu specific tools you can use to flash the firmware. If you want to try flashing to … OpenWrt: Flashing Linksys WRT1X00AC/S from USB-TTL Using Ubuntu
The Trivial File Transfer Protocol (TFTP) is an extremely simple protocol most often used for network booting strategies, such as PXE and flashing OpenWrt images unto consumer routers. I go over full instructions for flashing OpenWrt using Ubuntu and flashing a sysupgrade in another post, this article will focus specifically on setting up a tftp … OpenWrt: Installing a TFTP Server on Ubuntu for OpenWrt Firmware Updates
When flashing an OpenWrt image to your newer versioned WRT1900AC/S, be aware that instead of using ‘setenv firmware_name’, you should instead use ‘setenv firmwareName’. The command will not fail, but the router will not understand that it should look for a non-default name for the image and your tftp transfer will fail. This change appears … OpenWrt: Use setenv firmwareName for newer versions of Linksys WRT1900AC/S
Whether you are updating the official LinkSys router firmware or taking it a step further and installing open-source firware like OpenWrt, serial level access to your Linksys router is the most dependable way of guaranteeing a connection. And if you have tried to flash the firmware via the web admin interface and after a reboot … Ubuntu: Serial level access to your Linksys WRT1X00AC/S