_README.pdf

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Briefing:
These utilities support
only
interfaces based on
ATmega162
chip. NEC, ARM or others are not
supported!
To detect if your current cable has bootloader enabled just run
VAGCOM_HWType.exe
and press the
Read
button. Make sure that the cable is connected to both – computer’s USB port and OBD2 port (or
12V power source). It will also show the HW type of the cable.
If the tool shows that bootloader is enabled you can flash EEPROM using
VAGCOM_EEWriteLang.exe.
Default language is English but you can choose any other available language from the dropdown list in
VAGCOM_EEWriteLang.exe
utility. If you choose any additional custom language then the interface
will be enabled for two languages in total: the one which was selected and English as well.
Install official VCDS version 17.1.3, 17.8, 18.2, 18.9, 19.6 (or later), copy
VCDSLoader.exe
into installed
directory and amend the shortcut on Desktop (and Start menu) to start VCDSLoader.exe each time
instead of original shortcut to VCDS.exe. VCDS.exe will be renamed to VCDS.exeL.
Internet connection
can stay ON.
Antivirus, Anti-Malware or any other similar software (including Windows Defender) will
need to have exception added to prevent it deleting the Loader.
Upgrading from previous Loader versions
When upgrading from previous
minor
Loader version (e.g. from 8.0 to 8.1) it is enough just to
copy/overwrite the new
VCDSLoader.exe
file in VCDS directory.
However, if upgrading from previous
major
Loader version (e.g. from 7.4 to 8.0), you also must reflash
the EEPROM using
VAGCOM_EEWriteLang.exe
utility (see the
Briefing
section).
Bootloader disabled and manual programming
If bootloader is disabled in your cable then it must be programmed using wires and a programmer
(search eBay for USBASP). In this case it would be best to determine the HW type manually because
the cable might be incorrectly flashed at factory. See sections below on how to correctly identify the
hardware type.
If in doubt or in case
VAGCOM_HWType.exe
shows “Interface not found” error even with the cable
connected to USB and 12V power source it is advised to reflash FTDI too:
ftdi_ft_prog_*.xml
file is for
flashing using
FT_Prog;
ftdi_mprog_*.ept
file is for flashing using
MProg.
*.hex
files are Intel HEX formatted files of the
*.bin
files.
Recommended interface to buy
You can buy «HEX-V2» interface from
www.OBD2CarTool.com
shop. Please note that this is not a true
HEX-V2
interface, it is just a restyled case, that’s why the name.
The interface comes with
ATmega162
chip, protective diode on OBD2 pin 16,
L9637D
chipsets instead
of transistors for K/L-Line and detachable USB cable. Bootloader is enabled on this interface from the
factory so there is no need to use USBASP programmer – it can be reflashed using
VAGCOM_EEWriteLang.exe
utility.
Hardware with STC chip
If the cable contains STC chip then before programming you must cut the line between pin 9 of STC
chip and the R50 resistor. No need to remove the chip or do any other actions.
Hardware type HW 0x44
Identification: ATmega162 pins 34 and 35 must be connected to GAL chip.
If in doubt use a multimeter to confirm the connectivity.
FuseBits: E:F9, H:DC, L:CD
Programming:
avrdude.exe -p m162 -c
usbasp
-e -U
-U
-U
-U
-U
-U
lock:w:0x3f:m
efuse:w:0xf9:m
hfuse:w:0xdc:m
lfuse:w:0xcd:m
flash:w:Flash1.96_HW_0x44.bin:r
eeprom:w:eepromavr.bin:r
Hardware type HW 0x46:
Identification: no connection from ATmega162 pins 34 and 35 to GAL chip.
If in doubt use a multimeter to check the connectivity.
FuseBits: E:F9, H:DA, L:CD
Programming:
avrdude.exe -p m162 -c
usbasp
-e -U
-U
-U
-U
-U
-U
lock:w:0x3f:m
efuse:w:0xf9:m
hfuse:w:0xda:m
lfuse:w:0xcd:m
flash:w:Flash1.96_HW_0x46.bin:r
eeprom:w:eepromavr.bin:r
Example hardware and connection schema
This is
HW type 0x44.
Notice the programming header available on the right side of the board. For best
results with this interface ensure that the jumpers J1 and J5 are removed (open).
If your interface does not have the programming header (unlike the shown above) then wires will need to be
soldered directly to the chips. Set Vcc voltage to 5V on the programmer; there should be no power on the OBD2
side.
Recommended schema is this:

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