We used pictures of the Xtreme speaker where we could however. It describes how to do it, the screen faces you see, and what to expect. This post shows procedure for updating firmware on JBL Flip 3 Bluetooth speaker.
So, we borrowed some pictures below from the firmware updates we did on our JBL Charge 3 speaker. ⚡ Mashable Score 3. Updating firmware on JBL Charge 3 Bluetooth speaker.
JBL Connect Plus app on iOS. The Charge 3 takes the party everywhere, poolside or in the rain, thanks to the waterproof design, durable fabric and rugged housing. Microprocessors are controlled by firmware that enables the device to do the job it was purchased for.