Why Is My Blink Sync Module Offline? How To Reconnect Sync Module?

If you see your blink sync module offline, it doesn’t mean it has been broken or needs a technician. In fact, this is a common problem with most of the blink camera users. By following this simple troubleshooting guide you can easily reconnect your sync module and get it online, once again!

There could be several reasons why your blink sync module goes offline. For example, unstable internet connection, outdated firmware, power issues, the distance between the blink sync module and the blinking camera, or a hardware issue are the few most common reasons why your sync module not connecting and working.

No matter what the cause is, your blink sync module will come online if you know the right troubleshooting procedure.

For example, to fix the blink sync module offline problem, first, make sure the wifi is working properly. Then, power cycle the sync module by unplugging it from the power socket and plugging it back in. Powercycling blink sync module is one of the easiest ways to fix the offline error. Additionally, you can reset your sync module to reconnect it.

But, what if your Blink sync module continuously goes offline even after a Wifi connection?

What if you’ve already power-cycle the sync module?

That’s where this post will save you a few hundred bucks! Keep on reading to find detailed step-by-step fixes for sync module errors.

Why is my Blink sync module offline?

As discussed at the beginning of this post itself, there could be multiple reasons why your snc module keeps going offline.

The following reasons cause the sync module to go offline:

  • Poor internet connection
  • Loose wiring
  • IP conflict with nearby networks
  • A glitch in your router or modem
  • Irregular power voltage
  • Server outage
  • Changes in the Wifi network setting
  • Fault in your sync module
  • Outdated device firmware
  • Other underlying issues

Poor wifi connection

Having a sluggish internet can cause your sync module to go offline. A poor internet connection can happen due to many reasons. For example, the distance between the wifi router and the sync module, internet outage in your area, IP conflicts, etc.

But, don’t worry! Later in this post, we will talk about how to fix the internet and connect it to the sync module.

Outdated firmware

Keeping your sync module on updated firmware is necessary to keep it operational. If your sync module software is outdated and doesn’t work properly, download the latest firmware.

Ip conflicts

This only happens when your blink sync module blinking green light.

IP conflicts basically mean that your blink sync module and any other wireless device are causing interference in networks. For example, a wifi router, microwave, Bluetooth devices, etc can cause such conflicts in IP addresses.

But, the most common conflicts in the blink sync module happen with the wifi router.

Later in this post, I discussed how to fix IP conflicts in the blink sync module.

Power issues

It’s not surprising to know that a power failure can obviously cause your sync module to go offline right away! In such cases, there could be a problem with the power cords, switchboard, or circuit breaker.

Distance between blink camera and sync module

You might not consider it, however, the distance between the blink camera and the syn module is an important factor for a working sync module. If the distance between the sync module and the blink camera is too far, it’s obvious that the blink sync module will keep going offline.

Hardware issues

After trying every fix, if your sync module won’t go online, there could be a problem with the internal components of the device.

However, this should be considered the last option as you’ll need a technician to fix it.

But, how would you know the actual cause with your blink sync module?

To know what actually causing your sync module to go offline, you need to know about the light indicators that blink on the sync module device.

Blink sync module lights meaning

Blink sync module comes with various lights that inform the status of the device. Different lights in the sync module indicate the different status of the device.

These sync module light indicators are crucial to understanding before performing any troubleshooting.

For example, if your blink sync module displays solid blue and green lights, it basically indicates that the device is in sync with the cloud server and is “active”. However, a solid red light on the blink sync module indicates that the device lacks an internet connection.

Here, below, I’ve created a table that informs the meaning of each light indicator in sync module:

Sync module lightBlink sync module light meaning
Solid blue and greenThe sync module is properly working and connected to the cloud server. In this case, you don’t need to do anything.
No light on sync moduleNo light on sync module indicates that the device is completely off. The sync module isn’t getting desired power.
Solid red lightA solid red light on sync module indicates that the device isn’t connected properly to the internet connection. You need to check your wifi network.
Blinking green lightThis basically indicates the conflict in networks. In simple words, the sync module has assigned 2 different devices with the same IP address. In this case, you need to reset the sync module.
Solid green & blinking blueThis basically indicates that the device is in setup mode and soon it will be working.
Blinking green & blue lightA blinking green & blue light on sync module of blink camera indicates that the device is connected, however, the internet connection is poor.

Blink sync module blinking blue light

Does your blink sync module blink blue light? Is the blink camera saying “paired,” but there is a blue flashing?

A poor internet connection can be a potential reason.

A blue light on sync module flashes whenever the sync module faces a low internet signal or fails to communicate with the router. It can be due to the large distance between the router and sync module.

Bringing sync module and wifi router closer can help you fix this error.

Blink sync module red light

If your Blink sync module blinking red light, it basically indicates “no internet connection” at all.

Hence, ensure that the wifi is strong and has a stable internet connection. Try to recycle the wifi router to get the sync module online.

Blink sync module offline flashing green

The flashing green light in the Blink sync module is similar to the blue light. It means the device is connected to an unstable internet connection. Place your sync module near the router. It will help to strengthen the signal and may help you get the sync module online once again.

How to reconnect Blink sync module?

To fix your blink sync module offline error, your first step should be to check your internet connection. Just make sure the internet is working in your router and the device is connected. Next, power cycle your sync module to fix any IP conflicts, internal glitches, or any other errors. Also, make sure the sync module is running on the latest firmware. If nothing reconnects your sync module, try to reset the device. It should most probably fix the problem.

However, below, I’ve mentioned the various fixes that your can try to bring sync module online.

Fix 1: Power cycle your wifi router

As we know, poor internet connection mainly takes the Blink sync module in offline mode. The manufacturer suggests the device should be connected to a 2.4 GHz wifi internet connection that offers at least 2 MB/second of upload speed.

Ensure the connection is stable with other devices like mobile or laptop.

Sometimes, server maintenance, IP conflict, and weak signals restrict the connection between Wi-Fi and the sync module. In such cases, you should power cycle your wifi router.

To power cycle or restart the wifi router, pull out the power cord from the power socket, wait a few minutes(maybe 1 to 2 minutes), and plug it back in.

power cycling the wifi router
Power cycling the wifi router

This should bring your sync module online and you won’t see your blink sync module offline anymore.

However, in case, it doesn’t work, follow fix number 2 in this guide.

Fix 2: Power cycle your sync module

Sometimes your Blink sync module develops a glitch or functional problem internally. No need to worry, as it is common a common problem with old devices.

Due to this, the sync module keeps going offline even after a stable wifi connection.

Power cycling the sync module would most probably fix the problem and it may bring the sync module in a working condition.

To power cycle the sync module follow the below steps:

Step 1: Unplug the USB power cord from the back of the blink sync module and wait for 1 minute before plugging it back in.

Power cycle the sync module
Step 1: Unplug the sycn module from the back

Step 2: Your blink sync module should properly reconnect and you should be able to see a solid blue and solid green light on sync module.

solid blue and green light on Blink sync module device
A steady green and blue light on sync module

Power cycling should most probably bring your sync module online.

Fix 3: Move the sync module

Remember, wifi signals can also get obstructed by barriers like bricks, steel, and other electronic devices. Additionally, if the blinking camera is more than 100 ft. far from the sync module, it may create a connectivity problem between the wifi router, blink camera, and sync module.

Hence, moving the sync module to a different location can resolve the problem.

Blink sync module location
Blink sync module location

While moving your sync module to a new location, make sure:

  • Don’t put your sync module behind an obstacle, such as a wall, other electronic devices, etc.
  • Place your sync module in the middle of the house.
  • Place your sync module at a location which is not too far from blink camera as well as the wifi router.
  • Reduced the number of connectivity with the sync module(we suggest a maximum of 5).
  • The sync module should be within 100 ft. of the blink camera and wifi connection.

Also, to get the best connectivity in sync module, make sure there are 3 bars of signal strength between the sync module (with wifi router) and blink camera(with sync module and wifi router).

That’s why keeping the device close or placing it under the 100-meter range from the wifi router is recommended. Avoid installing the module in the basement, behind multiple walls, and in other isolated areas. 

Fix 4: Delete and re-add the sync module

Is your Blink sync module still in offline mode? There might be a configuration problem.

Don’t panic, it’s common after years of use. Sometimes a glitch or error inside the sync module device can also create such problems.

So, how do you get sync module online back?

Delete and re-add the sync module to fix it. By deleting the sync module from the device it will loss the configuration settings and any unknown errors that causing offline issue in your blink sync module.

Here’s how to delete sync module:

Step 1: Open the official Blink app on your mobile phone. Scroll down, at the bottom of the screen, you get an option “sync module.” Click that option.

Step 1
Step 1

Step 2: Again scroll down, the bottom of the page has the option “delete sync module.” Click this option to delete sync module from your device.

Step 2
Step 2

Step 3: You’ll be prompted to scan your blink module QR code or manually enter the model number (located behind the device).

Step 3
Step 3

Step 4: Once scanned, a pop-up will be seen to re-confirm the process. Click on “delete sync module” again.

Step 4
Step 4

Once that sync module is being deleted from the device, it will loss all the configuration settings and faulty settings that were causing sync module to keep going offline.

Now, it’s time to re-add the sync module in the device. Re-adding the sync module is a little long process and it would make this post lengthier. That’s why check this link to re-add the sync module, and follow the steps properly.

Fix 5: Change wifi networks

If your blink sync module is still stuck in offline mode, change the wifi network. As mentioned, these devices need a 2.4GHz network with a 2mb/s upload speed.

Many routers come with dual-band networks, if the device network is 5GHz, the blink module will not connect properly.

So, it’s better to change the network with the recommended frequency type.

Here’s how to change the network in sync module:

Step 1: First, open the official blink app on your smart device.

Step 2: Scroll down and goes to the bottom of the page

Step 3: Here you find the “sync module”. Press it. The sync module setting page will open.

Step 4: Scroll down and click “change wifi network”.

Step 5: Select the network you are willing to connect.

Changing wifi network should fix the problem and your sync module won’t be offline anymore.

Fix 6: Troubleshoot from the mobile app 

The device will show three bars (signal strength) when the Blink sync module is connected to a wifi network and the internet is stable.

If there is a connection error, glitch, or another issue, the device goes offline and those “three bars” won’t be visible. In such cases, you can try troubleshooting the sync module through your blink mobile app.

All you have to do is:

Step 1: To troubleshoot the problem, open your blink official app.

Step 2: Click “sync module offline” on the home page.

Step 3: You’ll see a “troubleshooting page”. Click and start troubleshooting.

Follow the steps accordingly and ensure the problem is resolved. By following the procedure directed by the mobile app, you should be able to get your sync module online back.

Fix 7: Reset the wifi router

There is one possible fix available to troubleshoot to fix the offline mode in the Blink sync module. Try to reset your router or modem and then check the connectivity. The process will fix any glitches and firmware errors in your broadband device.

Step 1: So first turn the router from the power outlet

Step 2: Pull out the power cords available behind the router

Step 3: Remove the Ethernet cables.

Step 4: Wait for at least 1-2 minutes before plugging in. 

This should most probably fix the problem and get your sync module online once again.

Fix 8: Reset the blink sync module

If the above-mentioned troubleshooting fixes didn’t work out for you, try to factory reset the sync module. With years of constant use, the sync module of blink camera may develop internal glitches or firmware errors. Resetting the module can fix the problem and resolve offline issues also.

To properly reset the blink sync module, follow the steps below:

Step 1: First, power cycle the sync module. Before you reset the sync module, make sure you have tried to fix the problem by power cycling the blink sync module.

Step 2: After power cycling the sync module, note down the light indicator colors. If the light is solid blue & solid green, the device is ready to connect. If the color is different, go to the next step.

Step 3: If the sync module light indicator is different than the solid blue & solid green light, press the reset button. You can easily find the sync module reset button on the backside of the device. See the above picture.

Step 4: Wait for a few seconds, like 15-30 seconds. The device should have now solid green light and solid blue light.

Step 5: The device is now ready to be paired once again and re-setup the sync module with the blink app.

Fix 9: Contact the Blink support team

If you’ve already followed all recommended steps to fix the offline problem and still, your Blink sync module does not solve the error, maybe there is a hardware issue.

Old devices develop technical problems over the years. In this case, a professional can only fix the problem. If you have a warranty period, replace the device or contact blink support for repair. Below are the contact details of the blink support team.

Call at: 781-332-5465

you can call toll-free number 1-833-392-5465.

You can also contact them from the following link.


There are many reasons why your sync module is offline. The most popular reasons are, slow internet connection, loose wiring, inflicted IPs between sync module and other wireless devices, outdated device firmware, etc.

However, getting sync module online isn’t too hard. By following our simple-to-follow troubleshooting steps, you can easily fix blink sync module offline error.

Here’re the few thing you can do to fix your sync module offline issue that we’ve discussed in this post:

  • 1. Power cycling the wifi router
  • 2. Power cycle the sync module
  • 3. Moving sync module to a better location
  • 4. Deleting and then re-adding the sync module
  • 5. Changing wifi networks or re-connecting to the wifi connection
  • 6. Resetting the wifi router

These were the few troubleshooting steps that you can take to fix your sync module. In case, none of the method works for you, try to contact blink support team.

Frequently Asked Questions

What does sync module offline mean?

If your blink sync module is offline, it basically indicates that the device isn’t connected properly or have poor internet connection. In this case, you need to power cycle the sync module or the wifi router.

What does blink sync module already registered mean?

When you try to setup your blink sync module, you might get this message “Serial Already Registered”. This basically indicates that the device has already setup with one of your blink accounts. Just make sure you’ve deleted all the blink account.

Do blink sync modules go bad?

Yes, blink sync module do go offline or bad when they can’t connect to a stable internet connection. In this case, you can power cycle the sync module to fix it.

Where is the reset button on my blink sync module?

Syn module has reset button located at the back of the device. We have already discussed this in fix number 8. See the picture.

What is the blink camera distance from sync module?

The distance between sync module and blink camera could be 100 feet apart. However, this could vary according to the model of the blink camera you are using.

About Author

Hey Everyone,

I am the author of this post, at snoozye.com and my name is Will Harris. I talk about technology and troubleshooting fixes. I've been working as a tech support engineer at Blink Home, a home automation company that deals with security cameras.

My job role was to do various troubleshooting and fixes with blink cameras and other devices. I worked there for 2-3 years and later I switched to other companies, like Kwikset.

I've several years of experience in identifying security camera problems. I can easily identify the causes and fixes.

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