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Home » Guides » How to Fix JBL PartyBox 310 Firmware Update Problems

How to Fix JBL PartyBox 310 Firmware Update Problems

What You'll Need

  • JBL PartyBox 310 Speaker
  • Smartphone with the latest JBL Portable App
  • Stable Wi-Fi / Internet Connection on your phone
  • Speaker connected to AC Power

Troubleshooting Steps

  1. Connect Speaker to AC Power: Firmware updates are power-intensive. Never attempt an update while the speaker is running on battery. Ensure it is plugged into a working wall outlet.
  2. Ensure a Stable Connection: Move your smartphone as close to the PartyBox 310 as possible to ensure a strong Bluetooth signal. Also, confirm your phone has a stable and strong Wi-Fi or cellular data connection.
  3. Restart the JBL Portable App: Fully close the app. On iOS, swipe up from the bottom to access the app switcher and swipe the app away. On Android, use the recent apps button and swipe to close. Re-open the app and try the update again.
  4. Power Cycle Everything: Turn off your PartyBox 310. Then, restart your smartphone completely. Once your phone has rebooted, turn the speaker back on, allow it to connect, and then attempt the update.
  5. Clear the App Cache (Android): On Android phones, go to Settings > Apps > find and select 'JBL Portable' > Storage & cache > 'Clear cache'. This removes temporary files that could be causing a conflict.
  6. Reinstall the JBL Portable App: If other steps fail, a fresh installation can help. Uninstall the JBL Portable app from your phone completely, then download and install the latest version from the Google Play Store or Apple App Store.
  7. Factory Reset the Speaker: This is a last resort, as it will clear your settings. With the speaker on, press and hold the Play and Volume + buttons for more than 10 seconds. The speaker will power off and reboot, indicating the reset is complete. You will need to re-pair it with your phone and try the update process again.

Firmware Update FAQs

Why did my firmware update get stuck at a certain percentage?

This is most often caused by a brief interruption in the Bluetooth or internet connection. Try moving your phone closer to the speaker and restarting the update process from the beginning. Ensure your phone screen stays on during the update.

Can I update the PartyBox 310 firmware without the app?

No, the only official method to update the firmware on the JBL PartyBox 310 is through the JBL Portable mobile app. There is no way to do it via a USB drive or computer.

The JBL app says my speaker is up to date, but I've heard there's a newer version.

First, make sure the JBL Portable app itself is updated to the latest version from your app store. Firmware rollouts can also be staggered, so if your app is updated, you may just need to check again in a few days.

Will a factory reset downgrade my firmware?

No, performing a factory reset will not change the currently installed firmware version. It only erases user settings like Bluetooth pairings and light show preferences.

My speaker is acting weird after the update. What should I do?

It is often a good idea to perform a factory reset *after* a successful firmware update. This helps clear out any old cached settings and ensures the new firmware operates smoothly.

Other PartyBox 310 Guides

JBL PartyBox 310 Battery Replacement

A step-by-step guide to safely replace the battery in your PartyBox 310 speaker.

JBL PartyBox 310 Bluetooth Won't Connect

A guide to troubleshoot and fix Bluetooth pairing and connection issues with your PartyBox 310.

JBL PartyBox 310 No Sound Output

Diagnose and resolve problems when your PartyBox 310 is powered on but not producing any sound.

JBL PartyBox 310 Won't Turn On

Step-by-step troubleshooting for when your PartyBox 310 shows no signs of power.

JBL PartyBox 310 Wheel Replacement

A guide to replacing a broken or damaged wheel on your PartyBox 310 speaker.

JBL PartyBox 310 Telescoping Handle Repair

Instructions for fixing or replacing a stuck or broken telescoping travel handle.

JBL PartyBox 310 Light Show Not Working

Troubleshoot and fix issues when the built-in light show is frozen, off, or not responding.

JBL PartyBox 310 Mic/Guitar Input Repair

A guide to diagnose and fix problems with the microphone and guitar inputs on your speaker.

JBL PartyBox 310 Water Damage Repair

First aid and repair steps to take if your splash-proof PartyBox 310 gets excessively wet.

JBL PartyBox 310 Speaker Driver Replacement

An advanced guide on how to replace a blown or damaged woofer or tweeter in the PartyBox 310.

JBL PartyBox 310 Top Control Panel Repair

How to fix unresponsive or sticky buttons (volume, play/pause, bass boost) on the main control panel.

JBL PartyBox 310 AC Power Port Replacement

A guide to replace a loose or damaged AC power input port, preventing the speaker from charging or turning on.

JBL PartyBox 310 TWS Pairing Fix

Troubleshooting steps for when you can't connect two PartyBox 310s together in True Wireless Stereo mode.

JBL PartyBox 310 App Connectivity Issues

What to do when the PartyBox app won't connect to your speaker, even when Bluetooth audio is working.

JBL PartyBox 310 Flashing Light Error Codes

Diagnose problems by understanding what the different flashing light error codes on your speaker mean.

JBL PartyBox 310 Fan Noise & Overheating Repair

How to clean or replace the internal cooling fan to fix excessive noise or overheating issues.

Enhance Your Experience

Download the official JBL Portable app to get the most out of your speakers with firmware updates, EQ adjustments, and more.

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