Bosch Lambdatronic LT4 ADV, Quick Start Manual

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Firmware Updates
Should a firmware update be required for your LT4 ADV, you will receive files
with the suffixes “.A2L” and “.HEX”. The “.HEX” file contains the LT4 ADV firmware
while the “.A2L” file is a variable description file. These files should be copied to
the “CONFIG” folder in the LT4 ADV project folder (typically C:\Bosch\ModasS‐
port\LT4\CONFIG).
In ModasSport, click the circular menu button in the top left corner of the win‐
dow and select the option “Flash Tool”:
Fig. 5: Flash Tool selection and Modas Flash Tool window
The Modas Flash Tool window will appear. The following points describe the ac‐
tions to be taken for each parameter in the flash tool:
▪ HW Interface: MSA‐Box II
▪ Hex File: Click the “Select…” button and navigate to the “.HEX” file which was
moved into the “CONFIG” folder of the LT4 project folder
▪ Seed DLL: Click the “Select…” button to locate the Seed DLL file. This is also
located in the “CONFIG” folder. Usually, this field will populate automatically
as long as the Seed DLL file is in the same directory as the “.HEX” file.
Once these settings have been set, click the “Program ECU” button.
Notice
Do not interrupt this procedure
It is very important that the power and communication to the LT4 ADV is not in‐
terrupted during this time. Do not disconnect the MSA‐Box from the computer
or from LT4 ADV and do not shut off power to the LT4 ADV.
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Bosch Motorsport Lambdatronic LT4 ADV 9 / 12