MobileRead Forums - View Single Post - "invalid PID checksum" when using mobidedrm, even though it IS valid.

mindwarp · 07-07-2009, 01:51 AM

I finally got one to work! lol It seems that all the kindle books I was using came up as invalid file type when I used mobidedrm.py (when I used mobidedrm005.py it said invalid PID) I download quite a few free kindle ebooks and samples and tested them out. Some worked with mobidedrm.py but none worked with mobidedrm005.py.

I haven't figured out why only some will work, but none with the newer mobidedrm.

I did notice that if the sample was drmed then I couldn't undrm the full book, but if the sample wasn't drmed then I could undrm the full book. Not sure why that is though... lol

Thanks again, wallcraft!

07-07-2009, 01:51 AM	#83
mindwarp Zealot Posts: 139 Karma: 3414358 Join Date: Dec 2008 Device: Kindle Fire	I finally got one to work! lol It seems that all the kindle books I was using came up as invalid file type when I used mobidedrm.py (when I used mobidedrm005.py it said invalid PID) I download quite a few free kindle ebooks and samples and tested them out. Some worked with mobidedrm.py but none worked with mobidedrm005.py. I haven't figured out why only some will work, but none with the newer mobidedrm. I did notice that if the sample was drmed then I couldn't undrm the full book, but if the sample wasn't drmed then I could undrm the full book. Not sure why that is though... lol Thanks again, wallcraft!