Roku Error Code 120 — Software Update Failed

What Does This Error Mean?

Roku error 120 means a system software update download or installation failed. Roku devices regularly receive automatic software updates to fix bugs and add features. When the update process is interrupted — by a network blip, a power interruption, or a server-side issue — error 120 appears. Your Roku is still usable in its current state. The fix is usually just trying the update again over a stable connection.

Affected Models

Roku Express
Roku Express 4K
Roku Streaming Stick 4K
Roku Ultra
Roku TV
Roku Streambar

Common Causes

Wi-Fi connection dropped or was unstable during the update download
Roku's internal storage didn't have enough free space to install the update
Roku's servers were temporarily unavailable when the update was attempted
Power was lost or the device was unplugged during the update installation
The downloaded update file was corrupted during transfer and failed its integrity check

How to Fix It

Make sure your Roku is connected to a stable Wi-Fi network with a good signal. To check signal strength, go to Settings > Network > About. You want a signal strength of 'Excellent' or 'Good.' If signal is 'Fair' or 'Poor,' move the Roku closer to the router before retrying the update.

Roku devices are small and can be moved easily. Temporarily placing the Roku very close to the router — even with a long HDMI extension — often resolves unstable update downloads.
Retry the system update manually. Go to Settings > System > System Update > Check Now. The Roku will attempt to download and install the update again. If the previous attempt left a partial download, a retry often completes it successfully.

Ensure the Roku won't be powered off during this process. Keep it plugged in and don't change channels or navigate away while the update downloads.
Restart your router and then retry the update. Unplug your router for 30 seconds, plug it back in, wait 2 minutes, and then check for the update on the Roku. A fresh router connection often provides a more stable download.

Also make sure no other heavy bandwidth activities are happening on your network (large downloads, video calls) while the Roku update is running.
If the Roku still can't update, check Roku's system status page. Go to status.roku.com on your phone or computer. If Roku's update servers are experiencing issues, wait a few hours and try again. Server-side issues that cause error 120 usually resolve within a few hours.

System update server issues are more common right after a major new Roku firmware version is released, as millions of devices try to update simultaneously.
If the Roku won't boot at all after a failed update, perform a forced factory reset. With the device unplugged, find the reset pinhole (usually on the back or bottom of the device). Insert a straightened paperclip, hold the reset button, and plug in the power while holding it for 30 seconds. This triggers a recovery that downloads fresh software.

A forced factory reset wipes all settings and channels. You'll need to sign in and set up the Roku again from scratch — but it will have fresh, current software.

When to Call a Professional

Error 120 never requires a service technician. All troubleshooting is software-based and can be done at home. In rare cases where the Roku is stuck in a failed update state and won't boot normally, a factory reset or USB recovery update may be needed.

Frequently Asked Questions

Is it safe to use my Roku while error 120 is showing?

Yes — your Roku will continue working with its current software version. Error 120 just means the latest update couldn't install. You can watch all your channels normally. Just retry the update when you have a stable connection — running older software for a few days is fine.

Why does Roku need software updates?

Roku updates add new features, fix bugs, improve streaming performance, and patch security vulnerabilities. They also maintain compatibility with streaming services that regularly update their own apps. Skipping updates for a long time can eventually cause channels to stop working properly. Kept updated, Roku devices typically work well for 4-6 years.

Can a failed update brick my Roku permanently?

Almost never. Roku devices have a recovery mechanism that allows them to download fresh software even if a previous install corrupted the device. The forced factory reset process via the pinhole button initiates this recovery. In extremely rare cases of hardware failure coinciding with an update, the device may be unrecoverable — but this is exceptionally uncommon.