Picture of the JBL Charge 4 splashproof speaker, front view, powered On, and showing the lighted battery gauge.

JBL Charge 4 Firmware Update Instructions

Here are our JBL Charge 4 firmware update instructions.  This routine can take up to thirty minutes to finish, depending on the speed of your WiFi connection, how fact your mobile device runs, and so on.  Plus, you can’t reverse once done.  That is, you won’t be able to return to the prior firmware version once you complete this upgrade.  So, be certain that you indeed want the update before going ahead with it.





JBL Charge 4 Firmware Update Instructions: Preparation Steps

You’ll need an internet connection, a Bluetooth enabled mobile or desktop computer device, the JBL Connect app, and the speaker itself.

So, connect your mobile device to the internet and install the JBL Connect app if you haven’t already.

Connect your Charge 4 to household power, because we don’t want its battery going dead during the firmware update.  A dying battery could corrupt the firmware in the speaker’s memory, and so, brick the speaker.  This could render it useless and not repairable.

So, to be safe, plug the speaker into AC power, using the included USB-C cable, as shown in the next picture.

Picture of the JBL Charge 4 Bluetooth speaker, back view, showing the port door open and the USB-C cord plugged into the power input port.
JBL Charge 4 Bluetooth speaker, back view, showing the port door open and the USB-C cord plugged into the power input port.

Finally, connect the other end of the USB-C cord into a strong enough AC adapter, and plug that adapter into a working AC outlet.

Then, pair your mobile device with the Charge 4.

You are now ready to begin the updating firmware process.





JBL Charge 4 Firmware Update Instructions: Step by Step

1. Find the JBL Connect App on your Mobile Device

We found ours on the fourth home page in the Apple iPad Air 2, as shown next.

Screenshot of the iOS 13 Home page, with the JBL Connect app highlighted.
iOS 13 Home screen, with the JBL Connect app highlighted.

2. Run the JBL Connect App

The app takes a few seconds to show you some pretty animations when you first start it, as shown in the next picture.

Picture of the JBL Connect app, showing its -Start Up, Searching for Products- screen.
JBL Connect app, showing its -Start Up, Searching for Products- screen.

But then it finds your paired JBL Charge 4 BT speaker and shows you its status screen, as pictured next.

Note the red dot on the Settings button in the bottom center of the speaker’s picture, as pointed at by the green arrow.  This means that there are important actions to take pending for this speaker.

Screenshot of the JBL Connect app Home page for our speaker, with the red dot on the -Settings- button highlighted.
JBL Connect app Home page for the Charge 4 speaker, with the red dot on the -Settings- button highlighted.

Also note that if there are no current messages or firmware updates available for this particular wireless speaker, then you will see no red dot.  In that case, your speaker already has the latest version of the firmware.

3. Tap the Settings Button

Touching the Settings button brings up the screen about the available firmware upgrade, as shown next.

Screenshot of the JBL Connect app, showing the -New Firmware- page, with the orange -Upgrade- button highlighted.
JBL Connect app, showing the -New Firmware- page, with the orange -Upgrade- button highlighted.

This screen gives details about the available firmware update.  In our case here, it suggests the Charge 4 upgrade to firmware version 3.0.0.0.  It also tells us that the current firmware version is 2.7.





4. Tap the Orange Upgrade Button

Touching the Upgrade bar brings up the Plug Speaker In screen if you haven’t connected your Charge 4 to AC power yet, as shown in the next picture. Otherwise, the firmware update process starts.  Jump down to step 5 to see the screenshots of that process in action.

Screenshot of the JBL Connect app, displaying the Charge 4 -Plug Speaker In- Prompt, with the -I Followed the Instructions- button highlighted.
JBL Connect app, displaying the Charge 4 -Plug Speaker In- Prompt, with the -I Followed the Instructions- button highlighted.

If this screen comes up, then go ahead and attach your speaker to power, as described at the top of this post.  Then, tap the I Followed the Instructions button.  This is the gray bar in the last picture, pointed at by the dark blue arrow.

5. The Firmware Update Process on JBL Charge 4 Begins

The update then starts.  The Connect app displays a progress screen as shown next, to let you know how far along the upgrade is.

5a. Firmware Update Progress, at Fourteen Percent Complete

Screenshot of the JBL Connect app, showing the firmware upgrade progress, at 14 percent done.
JBL Connect app, showing the firmware upgrade progress, at 14 percent done.

5b. Firmware Update Progress at Twenty-Eight Percent Complete

We’re probably about a minute into the upgrade at this point in the process.

Screenshot of the JBL Connect app, showing the Charge 4 firmware upgrade progress, at 28 percent done.
JBL Connect app, showing the Charge 4 firmware upgrade progress, at 28 percent done.

5c. Firmware Update Progress at Forty-Five Percent Complete

Screenshot of the JBL Connect app, showing the firmware upgrade progress, at 45 percent done.
JBL Connect app, showing the firmware upgrade progress, at 45 percent done.

5d. Firmware Update Progress, at Seventy-Five Percent Complete

Screenshot of the JBL Connect app, showing the Charge 4 firmware upgrade progress, at 75 percent done.
JBL Connect app, showing the Charge 4 firmware upgrade progress, at 75 percent done.

5e. Firmware Update File Transfer 100 Percent Complete

Once the app copies the upgrade file to the Charge 4, you get the  Restarting  screen, as shown next.





But note that the speaker is still in the process of installing the new firmware for several minutes after the Restarting screen appears. This screen warns us that our speaker will restart automatically, and it asks us not to unplug the speaker while it’s running the upgrade. Keep your speaker close to the mobile device running the app while the speaker upgrades.

Screenshot of the JBL Connect app, showing the firmware upgrade progress, restarting the speaker.
JBL Connect app, showing the firmware upgrade progress, restarting the speaker.

6. Wait for the Speaker to Shut Off

Watch the Power light on the speaker, as shown next.  That lamp will soon go dark, as shown next, pointed at by the green arrow.

Picture of the JBL Charge 4 power bank speaker, top view, showing the Power button highlighted.
The JBL Charge 4 power bank speaker, top view, showing the Power button highlighted.

The speaker may or may not turn itself back on again.  Ours did not.  If, like ours, yours did not come back up after the firmware update, then go ahead with the next step (Step 7).  But if yours did come back online though, then skip Step 7 and pick up with Step 8.

7. Power On the JBL Charge 4

Press the dark Power button to turn this wireless speaker on again.  The unit should again pair with your mobile device where you’re running the JBL Connect app.  The Power and Bluetooth buttons turn solid white  as your speaker successfully pairs again with your tablet or phone, as shown next.

Picture of the JBL Charge 4 wireless speaker, top view, showing the -Power- and -Bluetooth- buttons lit and highlighted.
JBL Charge 4 wireless speaker, top view, showing the -Power- and -Bluetooth- buttons lit and highlighted.

Meanwhile, back in the Connect App, the Upgrade Successful appears when the app receives confirmation from the speaker that the firmware update completed without errors, as shown next.

Screenshot of the JBL Connect app, showing the -Firmware Upgrade Successful- page, with the -OK- button highlighted.
JBL Connect app, showing the -Charge 4 Firmware Upgrade Successful- page, with the -OK- button highlighted.

8. Press the OK Button

With your speaker successfully paired to the JBL Connect app again, press the orange OK button, as pointed at by the dark blue arrow in the last screenshot.

The app then displays the JBL Charge 4 status screen once again.  However, this time, note that there’s no longer the red dot on the Settings button, as shown next.  This means that the firmware update succeeded and that the speaker is now running the current firmware version. In this case, it’s version 3.0.0.0.

Screenshot of the JBL Connect app, displaying its -Home- page for this Speaker, with the -Settings- button, that has no red dot now, highlighted.
JBL Connect app, displaying its -Home- page for this speaker, with the -Settings- button, that has no red dot now, highlighted.

9. Done!

You’re now successfully updated the firmware to the current version in your JBL Charge 4 wireless speaker.  Enjoy the tunes !





Other Posts About the JBL Charge 4 BT Speaker

  1. Updating Firmware on JBL Charge 4, How To
  2. JBL Charge 4 Review, Specs and Features
  3. Finding JBL Charge 4 Firmware Version
  4. JBL Charge 4 Low Frequency Mode, How to Turn On
  5. Charge 4 JBL Firmware Update Instructions

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References for JBL Charge 4 Firmware Update Instructions

  1. JBL Charge 4 Waterproof Portable Bluetooth Speaker Product Page, on JBL.com

Revision History

  • 2020-09-18: Updated the tags list.
  • 2020-05-03: First published.
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