Blink Sync Module Offline: Why It Happened & How To Troubleshoot?

Picture this – you’ve got your trusty Blink Sync Module all set up, ready to keep an eye on things.

But then, it goes offline. So why is your Blink Sync Module offline?

And how to troubleshoot it?

I’ll show you some reasons and casual troubleshooting tricks, from checking power connections to giving it a firmware update or even disarming firewalls!

Let’s dive in to get your Blink system back on track and your home secure again!

Why Is The Blink Sync Module Offline?

Why Is The Blink Sync Module Offline?

This device works with Blink wireless security cameras and acts as a hub or central unit for managing and controlling those cameras.

But in most cases, this device is likely offline due to interference in wireless signals, power issues (outages or fluctuations), a far distance from cameras, hardware errors, or firewall restrictions blocking its communication.

I will explain in more detail below!

Outdated Firmware

The firmware acts as the brain, controlling crucial functions like camera communication, alerts, and storage management.

When it becomes outdated, it’s like speaking a language that the Sync Module and the cameras can’t understand anymore.

The cameras can’t sync up, causing the system to go haywire.

Outdated Firmware

Interference In Wireless Devices

My Sync Module and those wireless cameras work together, but sometimes, things go south.

When other devices, like Wi-Fi routers, microwaves, or even baby monitors, start chattering on the same frequencies, all that noise in the air disrupts the smooth flow of communication between my Sync Module and the cameras.

In addition, this cause can lead to a conflict between their IP addresses.

If this happens, you will see your Blink Sync Module offline blinking green light.

Even walls and obstacles can play their part in this mess.

The wireless signals struggle to penetrate thick walls, making it harder for the Module and cameras to stay connected.

Far Distance

This Module relies on clear and strong signals to communicate with the cameras.

But when they’re too far apart, those signals weaken.

It’s like they’re trying to conversate from opposite ends of the room – not very effective, right?

The result? Your Module goes offline and loses touch with the cameras.

So there will be no live streams, no motion detection.

Power Issues

This Module needs a steady supply of power to keep everything ticking.

When power issues strike, for example, if there’s a power outage, this device will go offline.

But it’s not just outages that cause trouble.

Sometimes, its tiny surges and sags in power can wreak havoc on electronic devices.

Then, this Module may go offline to protect itself from these wonky power situations.

Moreover, a loose connection can be the culprit even if the power is stable.

And let’s not forget about those power adapters.

This Module might throw in the towel and go offline if they’re faulty or not providing enough juice.

Hardware Error

Hardware Error

One common hardware error is a malfunctioning component inside the Module itself.

It’s like having a hiccup in the system that throws everything off balance.

When this happens, this device can go offline, refusing to cooperate with its wireless cameras.

Another pesky issue is overheating.

Like all electronic devices, this Module generates heat during operation.

But when it gets too hot, it causes the hardware to act up and shut itself down to prevent damage.

Hardware errors can also arise due to manufacturing defects or wear and tear.

At this point, a replacement is necessary.


Firewalls are like the gatekeepers of your home network.

They act as protective barriers, shielding your devices from potential threats lurking on the internet.

But sometimes, their overprotective nature can hinder my Sync Module’s smooth operation.

When this Module tries to communicate with the Blink servers or its wireless cameras, the firewall goes all strict-parent mode.

Hence, your Module gets isolated from the outside world.

No connection to the Blink servers means no live feeds, motion detection, and notifications.

Sometimes, in my case, other firewalls on my router or ISP’s end can also affect the Module’s communication.

How To Troubleshoot Blink Sync Module Offline?

How To Troubleshoot Blink Sync Module Offline

Now you know the causes of this situation.

To work around this problem, I have a few simple solutions:

Reset The Module

A simple reset can often do the trick to troubleshoot the issue.

Here’s my guide on how to do this:

1/ Locate the power cable connected to the back of the Module.

Gently unplug it from the electric source.

I recommend waiting 15 to 20 secs before plugging the power cable.

This way, you can give it a moment to rest and recalibrate.

2/ Keep an eye on the LED lights. They might blink during the reset process.

Then, wait another 30 to 60 secs for the Module to fully boot up and reconnect with your network.

Once the LED lights stabilize and show a steady status, it’s ready to go!

3/ Reopen your Blink app on your smartphone or computer and check if your device is online and functioning.

Restart The Home Router

Restarting the home router is a simple yet effective troubleshooting step to get your home security system back on track!

1/ Locate your home router and find the power source. It’s usually connected to a power outlet.

2/ Unplug the power cable from the router.

While at it, check for any other cables on the router. If there’s an internet or WAN cable, unplug that too.

Then, wait about 30 seconds before plugging the power cable back into the router.

3/ Reconnect any other cables you had unplugged earlier. Make sure they’re securely plugged in.

Now, be patient for a few minutes as the router boots up and reconnects to the internet.

Check The Power

If you determine the cause of this problem is the power supply, follow these steps:

1/ Take a moment to locate the power cable connected to the back of your Module. It’s usually a USB cable or a power adapter. Give it a gentle wiggle if needed to ensure a snug fit.

2/ Next, trace the cable to its power source. Check if the power outlet or USB port is working correctly.

3/ If it’s plugged into a power strip or surge protector, verify that the strip is powered on and functioning.

4/ Consider trying a different power outlet or USB port to rule out any issues with the current one.

5/ Double-check the power adapter if you’re using one. Ensure it’s the correct adapter and not damaged in any way.

6/ Wait to see if it’s back online. It might take a minute to boot up and reconnect.

Update Firmware

If your firmware is outdated, the good news is, it’s an easy fix with these steps!

1/ Open up the Blink app on your smartphone or computer. Make sure it’s connected to the same Wi-Fi network.

2/ In the app, navigate to the “Settings” section. Look for an option like “Sync Module Firmware” or “Update Firmware.” The app will prompt you to install it if there’s an available firmware update.

3/ Click on the “Update” button.

Now, be patient and let the update work. Your Module might restart a couple of times during the update.

4/ Once the firmware update is complete, check the LED lights on the Module. They should stabilize to indicate a successful update.

Then, reopen the app and see if your device is back online and ready!

Relocate The Module

If you’ve tried the above method, but you still see your Blink Sync Module offline blinking blue light (it means the internet connection is weak), relocating the device might be the key.

1/ Identify a new spot closer to your Wi-Fi router or within range of the cameras without any obstacles.

2/ Safely unplug the module, find its new home, and plug it back in.

3/ Allow it to boot up and settle in the new location.

With an improved wireless connection and reduced interference, your Module will be back online and sync up with the cameras again.

Disable The Firewalls

Now, if firewalls make your Module offline, it’s time to disarm them and get things back on track! Here’s how to turn it off:

1/ Check if you have a firewall on your home router, computer, or any other device blocking the Module’s communication.

2/ Go into the settings of the firewall in question. It might be on your router’s admin page or your computer’s security settings.

3/ Look for an option to turn off the firewall. Remember, this is just a temporary measure for troubleshooting purposes.

4/ Then, reopen the Blink app and see if your device is back in action!

Remember to re-enable them afterward to maintain your network’s security.

Contact Support

If your Module is still offline after all the above methods, it’s time to call in the pros!

To contact Blink support, you just need to visit the Blink website or find their contact information in the app.

Then, explain the offline issue and their friendly team will guide you through troubleshooting steps and provide solutions tailored to your situation.

Frequently Asked Questions (FAQs)

Does Blink Work Offline?

No, Blink cameras and the Module require an internet connection.

The cameras transmit data to the Module, which, in turn, communicates with the Blink Cloud.

What Does Offline Blink Sync Module Mean?

When it’s offline, it indicates a disruption in its connection to the Blink Cloud servers.

Do Blink Cameras Work Without Sync Modules?

The answer is no. This Module is a hub that manages the cameras, processing data, and communicating with the Blink Cloud for remote access and alerts.

Can You Use Blink Without Paying?

The answer is yes. Basic features like live streaming and motion alerts are available for free.

But some advanced features, such as cloud storage for recorded videos, require a subscription plan.

Do Blink Cameras Need Wi-Fi Or Just Sync Module?

Both need a Wi-Fi connection to operate.

The cameras communicate with the Module via Wi-Fi, and the Module uses the internet to access the Blink cloud and provide remote access and alerts.


I’ve unraveled the mystery behind the “Blink Sync Module offline” glitch and armed you with helpful troubleshooting tips.

Remember, glitches happen, but with the know-how, you’re the master of your Blink domain!

Whether updating, relocating the device, or even calling in for support, you’ve got the tools to conquer offline issues.

Thank you for reading!

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David owner of


Hi! I’m David — a writer, blogger, and proud owner of Smarterve. I’ve been using smart home gadgets and in the home industry for about a decade. I love to solve problems, give suggestions, and create ease for people to enjoy life. This blog is where I can share tips and provide solutions to everyone using smart gadgets.

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  2. Encountered an issue, troubleshooting tips were helpful. More depth on potential problems would be beneficial.

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