i still own a 60 GB PS3 v3.15. I now wanted to install the debug firmware 3.15. The PS3 even finds the file on the usb stick ("Version 3.15 Location USB device"), but after pressing OK it says "Data corrupted (80029CCA)". Retail 3.15 is working fine. Do you have any ideas what to do now? All debug firmwares here are title with "USA". I'm from germany, is there any difference in the firmwares for different regions?