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
Amazon.com: JBL Xtreme Portable Wireless Bluetooth Speaker (Blue) : Electronics
JBL Xtreme | JBL's ultimate splashproof portable speaker with ultra-powerful performance and comprehensive features
JBL Xtreme - NEW Firmware UPDATE - NO MORE DISTORTION [2017] - YouTube
JBL Xtreme | JBL's ultimate splashproof portable speaker with ultra-powerful performance and comprehensive features
JBL Xtreme 2 Firmware Update 2.3 to 2.7 - YouTube
JBL xtreme 2 wont update : r/JBL
New Firmware update on Xtreme 2, thoughts? : r/JBL
JBL Xtreme 2 | Portable Bluetooth Speaker
Updating Firmware on JBL Xtreme Speaker - Tom's Tek Stop
Review of multiple BT speakers, as well sound quality JBL Xtreme 3 vs Motion Boom Plus 00.36 Firmware : r/Bluetooth_Speakers
JBL Xtreme 2 review: A sturdy Bluetooth speaker that's up for serious partying | TechHive
JBL Xtreme2 UPDATE 2020 - YouTube
JBL Xtreme - NEW Firmware UPDATE - NO MORE DISTORTION [2017] - YouTube