Please try initializing the speaker by pressing and holding down the (power)/ Pairing button and the - (volume) button at the same time for more than four seconds. This is performed while the speaker is turned on.
Please keep in mind that if you initialize the speaker, it may not be able to make a Bluetooth connection with your iPhone/iPod touch or PC. In this case, erase the pairing information of the speaker on your iPhone/iPod touch or PC, and then perform the pairing procedure again.
This should revert the speaker to factory defaults but will retain the new firmware.
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