This is a tutorial to fix Autocom/Delphi Firmware update Fail Error when autocom/delphi firmware can not be upgraded using Autocom/Delphi software application.
Step 1: you need to open the case of Autocom / Delphi hardware. and remove main board from case.
Step 2: Find MCU STM32 Big Grin on PCB, to enter MCU into Boot mode you need to connect legs 108 nad 138 together with some wire.
Notice: you can do that as on attached pictures (test point TP205 or TP206 connect with capacitor) but some of units have different PCB so you need to solder directly to the legs or find test points with multimeter.
Step 3: install and run
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