JBL Horizon 2, Service Manual

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3.
Software upgrade Instruction & Reset Procedure
1)restore factory setting
in user model, press and hold ‘fm’ ‘1’ button 5 seconds.
----when the factory setting restoring is complete ,the product automatically switches off and restarts.
3)
Upgrading new software
3.1 MCU software requirements
● upgrading file
● elink32 pro
● service computer
--- Connect the set to the PC via the elink32pro cable.
3.1.1 Procedure of upgrading software.
Open the upgrade file with the HT32_ICP tool and configure it accordingly
The elink32pro is connected to the computer and the other end is connected to the HORIZON2.Click "STAR" on the
computer tool,after update the result will display successful,if not ,the result will display error