Seat Ibiza 6L TDi EDC15P Boot Mode How?

Hello,

I have a big problem. I tried to ECU tune my Seat Ibiza 6L TDI PD ASZ 130BHP this weekend and it worked. I downloaded some files with my Galletto 1260 to my ECU and everything went fine.

When I tried to download the 11th file to my ECU it stopped at 50% or something while writing. It gave an error but I'm not sure which one it was. A writing error or something. I think the voltage of my battery was too low but I'm not sure.

Now I can't load any file on my ECU. The program of the Galletto 1260 just hangs after "initializing writing". I also can't read the ECU file.

I read a lot on the internet and I know I need to get in boot mode. I can get in boot mode with my EDC15P by connecting pin 24 to ground while turning the ignition on. I tried that but the program still hangs when I'm trying to write the file. Maybe I'm not getting in boot mode. I used this pdf to see which pin is the boot pin: http://trionic.mobixs.eu/EDC15P/VAG%20EDC15P.pdf

I used the little circle on the chip as reference to see where I can find the boot pin.

Does anyone know how I can fix my ECU with a Galletto 1260? I don't know anymore what I can try to get it working.

I already ordered a MPPS cable because I heard it has an auto recovery function, but because, like everyone, I need my car so I actually can't wait for the MPPS cable to arrive.

I really hope someone can help me!
I attached a photo of my ECU.

Thanks!