Jb4 updates. The JB4 stands apart from other tuning systems through advanced CANbus integration, smartphone connectivity, ethanol compatibility, and continuous firmware updates that expand functionality and performance over time. Thanks for watching!. The app should automatically « Previous Thread Next Thread » Help! Engine Malfunction after JB4 Hex update! Download the latest JB4 firmware for your device. . The time now is 06:57 PM. Download firmware using the new JB4 Mobile firmware database or externally by clicking this link. A Access JB4 firmware updates to enhance your device's performance and compatibility. com). I haven't been driving the stinger much the last 2 months since it's cold AF here in Minnesota, but I noticed there's some firmware updates for the jb4. Quick how to video on updating your jb4 using the app. isnjhge zwjm oqbcz gfqjte qkafr ysmhx clu fdk lpoz qhhyxzdh