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

Surfergirl · 08-02-2008, 03:44 PM

The PID for a Windows PC often (always?) has a $ as the 8th character, and I think this is what is causing the problem.

I've got this problem - my PID is from a PC and has a $ as the 8th character. I'm fairly computer literate, but don't know anything about Python and am not sure what changes need to be made to the mobidrdrm program.

If I send my PID to someone, could they run it through the calculation script, and tell me what the correct PID actually is? I'm desparate to get the DRM-stripping working, as a book is due to be released very soon which is only available in MOBI (and I've got a Sony Reader!)

Thanks, Irene

08-02-2008, 03:44 PM	#16
Surfergirl Enthusiast Posts: 49 Karma: 299 Join Date: Oct 2007 Location: South Wales, UK Device: PRS-505 (Blue)/PRS-505 (Red)/iPhone 3GS	The PID for a Windows PC often (always?) has a $ as the 8th character, and I think this is what is causing the problem. I've got this problem - my PID is from a PC and has a $ as the 8th character. I'm fairly computer literate, but don't know anything about Python and am not sure what changes need to be made to the mobidrdrm program. If I send my PID to someone, could they run it through the calculation script, and tell me what the correct PID actually is? I'm desparate to get the DRM-stripping working, as a book is due to be released very soon which is only available in MOBI (and I've got a Sony Reader!) Thanks, Irene