Hey there, fresh noob. I've been reading a lot here and on other forums trying to delete the immobilizer on my new-to-me 2005 Jetta. The ECU is a Bosch ME7.1.1, and I'm connecting via a Ross-Tech HEX+CAN cable to my windows 7 laptop through a bench cable with pin 121 on the small connector also attached to 12v. (I used the following threads for reference, here and here. The only other thing I've done is add a 1k ohm resistor in my jumper wire that I'm connecting to the ECU boot pin for 5 seconds during power on, but I'm starting to realize perhaps that's not necessary? If it's only grounding, I don't see what the point in the extra resistance would be.

Nonetheless, I'm able to connect to the ECU with VCDS. I have the VCP drivers installed for the cable set to port 3 with intelligent bootmode disabled. ME7 is able to read the cable and connect to port 3, but I keep getting the error code "Boot_mode... FAIL... No response from ECU. (error=0x07)." As far as I know I'm correctly entering bootmode (unless the resistor is causing problems), although I get errors when I trying to connect using --OBD as well.

It seems there are a lot of different methods out there as far as jumping terminals on the ECU goes, but the only thing I've done is add a short wire to the board for grounding as show in the photo below.



Attached is my error message in command prompt. I've tried all different baud rates with no luck either. Thanks to the community in advance.

Ok, just got done reading this thread. Seems maybe I'm just SOL trying to use the HEX+CAN cable?

More errors attached.

My first attempt was without using pin selection and failed. (attachment error message 4)

The second time I added --CSpin P4.7 and it successfully dumped the file. (message 5)

The only problem with this is that the file itself is empty. There doesn't seem to be any data there. (attachment hex values)

So now I'm going back to see what other pin values I can enter. I haven't really researched this part of the process at all yet.

Well it hasn't been a total waste of time so far. I was able to retrieve the SKC from the file I pulled at --bootmode 95160 P6.3 and VCDS accepted it.