When I use BMW ICOM A2 do programming, car engine off or on, shows lower voltage. I have tried with other ISID too, virtual and native on DELL D630. Reported values by ICOM A2 with engine off 11.3 , with engine on 12.8

I have tested other BMW diagnostics tool, it shows good voltage.
BMW reprogramming requires at least 13V, so I’m unable to do programming, I guess if I use other car for supply voltage to my car, will not be enough too.
Is there a firmware fix or else for this ICOM A2? Is hardware fault?
WITH ENGINE OFF , ONLY 11.33 INSTEAD OF 12.33

bmw icom a2 WITH ENGINE ON , ONLY 12.61 INSTEAD OF 13.61
Solution from obd2express engineer as follows:
Advice you get one additional Battery Charger and Stability Voltage Equipment, such as the MST-80.
When you use ICOM A2 to program BMW, it will use almost 3 hours or more, the battery voltage usually is lower or higher than standard values due to electricity instability which might result sudden disruption during programming and cause damage to Vehicle ECU. MST-80 is very helpful, when you do ECU programming for BMW, for BENZ and other brands of vehicles.
MST-80 can do more as follows.
1, MST-80 can also work with BMW GT1, OPS.
2, MST-80 is very helpful, when you do ECU programming for BMW, for BENZ and other brands of vehicles.
3, not only it can be used for vehicle ECU programming, but also can be used for many other types of UPS (Uninterruptible Power Supply System) equipments
4, it regulates the output voltage and current with over-charge and over-heat protection and current adjustment. It can prolong the lifespan of the battery drastically and enables battery charge to the full automatically if it’s used for battery charge.
Interest MST-80? read details at: http://www.obd2express.co.uk/wholesale/mst-80-auto-voltage-regulator-diagnsotic-tool.html

mst-80-auto-voltage-regulator-diagnostic-tool-1

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