WRT1900ACS
AC1900 Dual-Band Smart Wi-Fi Wireless Router - Shelby

The Linksys WRT1900ACS router has Gigabit WiFi, 4 N/A ETH-ports and 0 USB-ports.
It is also known as the Linksys AC1900 Dual-Band Smart Wi-Fi Wireless Router - Shelby.It also supports custom firmwares like: OpenWrt, LEDE Project

WRT1900ACS router specifications (specs)

Linksys WRT1900AC review (quick overview)

Here is the quick comparison of how the Linksys WRT1900AC compares to other routers on our site:

Hard reset instructions for Linksys WRT1900ACS

If your WRT1900ACS router is not working as it should, dropping connections or not being responsive, you should first do a reset of the router to see if the problems persist. Other scenarios where you might want to reset your router is if you've forgotten the password or misconfigured it and can't get access anymore.
Your can reset your Linksys WRT1900ACS in the following way(s):

Through the web interface

1. Open your browser and navigate to the router interface (check default settings below)
2. Under the Administration tab you will find a sub-tab called Factory defaults
3. On the Factory defaults page click the button labeled Restore Factory Defaults

With the reset button

1. Have your unit powered on
2. Press and hold the reset button for at least 10 seconds until the power light starts blinking, then release.
3. When the power light goes solid, unplug the power to the router for 10 seconds
4. Plug the power back in and start the router
5. When the power light goes solid again the router is ready to use.

The 30-30-30 reset

1. When router is powered on, press the reset button and hold for 30 seconds. (Use a paper clip or something sharp)
2. While holding the reset button pressed, unplug the power of the router and hold the reset button for 30 seconds
3. While still holding the reset button down, turn on the power to the unit again and hold for another 30 seconds.

This process usually works for resetting any router to it's factory setting. If that doesn't work be sure to check out the questions and answers incase someone else has had similar problems resetting their router.

Note: It is worth reading more about how to reset routers with the 30 30 30 reset and what the risks and considerations are when resetting your router this way, instead of just rebooting it.

Default factory settings for Linksys WRT1900ACS

WRT1900ACS Firmwares

Staying up to date with the latest firmware is a good idea to keep your router even more secure from various security flaws.
If you want to squeeze a little bit of extra functionality out of your router, consider flashing an open-source firmware like dd-wrt, openWRT or LEDE. Flashing a custom ROM can greatly increase the stability and functionality of your old router.
Following are the firmwares that we have identified existing for the Linksys WRT1900ACS:

Flashing OpenWrt on the Linksys WRT1900ACS

The Linksys WRT1900ACS is supported by OpenWrt according to their Table of Hardware. So flashing OpenWrt onto it should be quite straigthforward.
We couldn't find any specific instructions for flashin OpenWrt on the Linksys WRT1900ACS, but since it's listed in their Table of Hardware as supported, you can head over to the OpenWrt install instructions and read on there.
Note: Flashing custom firmwares is always on you're on own risk. Make sure to read OpenWrt's wikis to understand the risks and how to proceed if something goes wrong.

Flashing LEDE Project on the WRT1900ACS

The Linksys WRT1900ACS is also supported by the LEDE Project.
To install LEDE aquire the correct firmware from their Firmware downloads page and then follow the instructions on their Quick Start Guide
Note: Make sure to read the LEDE wikis carefully before flashing.

Linksys stock firmware for the WRT1900ACS

Stock firmwares for the WRT1900ACS are available under the download section on the modem's support page. You can also refer to the router's manual for instructions on how to upgrade the firmware.

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