JBL Xtreme 3 - speaker - for portable use - wireless - JBLXTREME3BLKAM - Speakers - CDW.com
JBL Charge 5 vs JBL Xtreme 3: which Bluetooth speaker is best for you? | What Hi-Fi?
New Firmware 7.6.0 · Issue #2 · ZuwaiiVR/JBL-Charge-3-firmware · GitHub
Here's actual firmware and graph of the xtreme 3, any other old graphic with previous firmware is not anymore (specially when new xtreme 3 comes with 0.2.0.4) : r/Bluetooth_Speakers
JBL Xtreme 3 - How to find out the FIRMWARE version on the speakers - YouTube