Hello tuner gods!

I have 3 ECU's here all 512KBs c boxes. I have a few questions

Do we have an XDF file for a C box?

Is it possible to solder a 1024KB in it + what needs to be done more? (I have 2 ecu's to spare so am willing to risk it all on 1)

Also am getting likely an M box later this year from a friend. He will run an stand alone ECU. I already tuned his ECU with MPPS V16, really nice stuff and alot of info on that M stuff.

But If someone has XDF file for this C box, or any 512KB would be lovely! I've been searching for days with absolute 0 results.

Thank you all peeps!