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

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.

Sincerely,

EarFun Customer Service Team

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