uboom L won't power up after attempting to upgrade firmware

Aug 17,2022
Aug 17,2022 at 4:50 pm
Aug 17,2022 at 4:50 pm

My  speaker shows  a flash of lights and makes a crackling noise when pressing the power button.  It does not come on at all.

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EarFun CS Team

Staff Member

Aug 18,2022 at 2:46 am
Aug 18,2022 at 2:46 am

Hi friend, 


Thanks for choosing EarFun. 


We are afraid that it is caused by the failed upgrade. You just need to upgrade the firmware successfully and then the issue will be fixed. 


Please click this link to download the firmware and the installation instructions. https://drive.google.com/drive/folders/1MI5XiLReotmvD9N0kJKL_q--yb3REeFH


Update Notes:

1. Please fully charge the speaker first. (If the speaker is not fully charged and plugged into the laptop, insufficient power supply will cause the update to fail.)

2. Please use the USB 3.0 cable with the data channel to update the firmware (the included cable and the USB 2.0 cable don't work).

3. Place the speaker on the desktop, do not move the speaker or the cable while updating.

4. If the update is unsuccessful, please try again a few times.




EarFun Customer Service Team



Report #1 Reply
Aug 18,2022 at 6:31 am
Aug 18,2022 at 6:31 am

Thank you.  Did the upgrade again and it's working fine  now

Report #2 Reply

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