The Linksys WRT1900ACS is a good wireless router, but one of its best features is that it is supported by different open source firmwares including OpenWrt. So, if you’re like me and want to use this router with the OpenSource router firmware to unlock all of its power instead of the limited stock firmware, read this guide to learn how to install it. It’s not a hard process but I had several issues when I installed the firmware on my router so I’ve written in this guide all the solutions I had to apply. I hope they will help you too.
If you have previously installed DD-WRT on your Linksys WRT1900ACS router and want to switch to OpenWrt, read how to rollback to the stock firmware before installing OpenWrt.
If you have a different router and you want to check if it’s supported by OpenWrt, you can check it in the table of supported devices. On the other hand, if you want to buy a router to install OpenWrt, you can have a look at the ‘Ideal for OpenWrt’ table.