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Removing DRM protection from Kindle for PC ebooks using unswindle

 (http://stream-recorder.com/forum/showthread.php?t=5438)

any ANONYMOUS forum user 01-18-2010 11:09 AM

Removing DRM protection from Kindle for PC ebooks using unswindle


 
Unswindle - free open source application, developed by "I love cabbages". It grabs a unique Kindle For PC key for every book using Windows debugging APIs. It then hands all of the actual hard work of actual decryption to darkreverser's MobiDeDRM.

Quote:
Originally Posted by I Love Cabbages
Amazon actually put a bit effort behind the DRM obfuscation in their Kindle For PC application (K4PC). The Kindle proper and Kindle for iPhone/iPod app both use a single "device" encryption key for all DRMed content. K4PC uses the same encryption algorithms, but ups the ante with a per-book session key for the actual en/decryption. And they seem to have done a reasonable job on the obfuscation. Way to go Amazon! It's good enough that I got bored unwinding it all and just got lazy with the Windows debugging APIs instead.

Download the latest version of unswindle:
I Love Cabbages

or
Download unswindle v7
Code:
http://pastie.org/1030388
http://pastie.org/pastes/1293151
Download unswindle v6-rc1
Code:
http://pastie.org/761825
Download unswindle v5
Code:
http://pastie.org/755670
Download unswindle v4
Code:
http://pastie.org/753038
Download unswindle v3
Code:
http://pastie.org/749308
You'll also need a copy of darkreverser's mobidedrm.

Put those kids together (in the same directory) and run unswindle.pyw. It launches KindleForPC.exe. Pick the book you want to decrypt. Close KindleForPC. Pick your output file. And enjoy the sweet taste of freedom.

Script name in honor of rms and The Right to Read. Don't use this to steal, or I'm taking my toys and going home.

Updates. It came to my attention that unswindle version 1 did not work if KindleForPC was installed as a non-administrator and did not work on versions of Windows other than XP. Version 2 should fix these issues. Version 3 fixes an intermittent path-getting issue. Version 4 fixes an exception related to opening thread handles, detect Topaz format books, and detects that you have the proper version of Kindle For PC installed. Version 5 works with the new (20091222) version of the K4PC executable. Version 6 cleanly handles already DRM-free files.

Update 2009-12-22. Amazon has demonstrated that they (unlike Adobe) take their DRM seriously: they've already pushed out a new version of K4PC which breaks this particular script. As you can clearly see via their SHA-1 hashes:
fd386003520f7af7a15d77fcc2b859dd53e44bc1 KindleForPC-installer-20091217.exe

13a816a3abf7a71e7b6a55228099b03b1dc3789b KindleForPC-installer-20091222.exe

The application doesn't seem to auto-update, so if you can find a copy of the original installer you should be fine. Otherwise you'll have to hang tight. Newest unswindle version detects if you have the wrong K4PC executable installed.

Update 2009-12-22 (2). The K4PC update may not actually have been targeted at unswindle, as Amazon seems to have done nothing in particular to make the basic approach more difficult. In any case, unswindle was updated to handle the 20091222 version of the executable. We'll see if Amazon throws out another new build in short order, and I'll put some more elbow grease into figuring out the PID-generation algorithm.
See also:
ebook DRM removal tools archive

Stream Recorder 03-31-2010 03:23 AM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
How to use unswindle
  1. Download and Install python 2.6 for Windows x32 (even if you have Windows x64)
    Note: Do NOT use python 2.7!
  2. Disable UAC if you use Windows 7 or Vista.
  3. Download unswindle.pyw and mobidedrm.py
  4. Double-click unswindle.pyw. Kindle For PC will open.
  5. Select the book you want to convert.
  6. When the book loads, simply exit Kindle For PC.
  7. The "Select unencrypted Mobipocket file to produce" dialog will open asking you where you want to save your decrypted .mobi file. Enter the filename with the .mobi extension and save the DRM-free .mobi file.

Note that unswindle uses mobidedrm, so it can't remove DRM protection from Topaz .tpz ebooks.

b00jum 04-13-2010 07:10 AM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
Ok - all the previous instructions used to work - at least the part up to unswindle. I haven't used it for a few months.

So - it stops working, I check this forum and find you need to add unswindle to the mix. Good enough - download v5 and 6 - neither work - at least the product is not. unswindle seems to do its job and I get an output file.

I'm getting an error in Calibre when I load the output from unswindle.

ERROR: Could not open ebook:

Traceback (most recent call last):
File "site-packages\calibre\gui2\viewer\main.py", line 61, in run
File "threading.py", line 477, in run
File "site-packages\calibre\ebooks\oeb\iterator.py", line 183, in __enter__
File "site-packages\calibre\customize\conversion.py", line 211, in __call__
File "site-packages\calibre\ebooks\mobi\input.py", line 27, in convert
File "site-packages\calibre\ebooks\mobi\reader.py", line 331, in extract_content
File "site-packages\lxml-2.2.2-py2.6-win32.egg\lxml\html\soupparser.py", line 23, in fromstring
File "site-packages\lxml-2.2.2-py2.6-win32.egg\lxml\html\soupparser.py", line 66, in _parse
File "site-packages\beautifulsoup-3.1.0.1-py2.6.egg\BeautifulSoup.py", line 1499, in __init__
File "site-packages\beautifulsoup-3.1.0.1-py2.6.egg\BeautifulSoup.py", line 1230, in __init__
File "site-packages\beautifulsoup-3.1.0.1-py2.6.egg\BeautifulSoup.py", line 1263, in _feed
File "HTMLParser.py", line 108, in feed
File "HTMLParser.py", line 148, in goahead
File "HTMLParser.py", line 226, in parse_starttag
File "HTMLParser.py", line 301, in check_for_whole_start_tag
File "HTMLParser.py", line 115, in error
HTMLParseError: malformed start tag, at line 46, column 12

Any clues?

Stream Recorder 04-13-2010 07:23 AM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
Quote:
Originally Posted by b00jum (Post 18132)
Ok - all the previous instructions used to work - at least the part up to unswindle. I haven't used it for a few months.

So - it stops working, I check this forum and find you need to add unswindle to the mix. Good enough - download v5 and 6 - neither work - at least the product is not. unswindle seems to do its job and I get an output file.

I'm getting an error in Calibre when I load the output from unswindle.

ERROR: Could not open ebook:

Traceback (most recent call last):
File "site-packages\calibre\gui2\viewer\main.py", line 61, in run
File "threading.py", line 477, in run
File "site-packages\calibre\ebooks\oeb\iterator.py", line 183, in __enter__
File "site-packages\calibre\customize\conversion.py", line 211, in __call__
File "site-packages\calibre\ebooks\mobi\input.py", line 27, in convert
File "site-packages\calibre\ebooks\mobi\reader.py", line 331, in extract_content
File "site-packages\lxml-2.2.2-py2.6-win32.egg\lxml\html\soupparser.py", line 23, in fromstring
File "site-packages\lxml-2.2.2-py2.6-win32.egg\lxml\html\soupparser.py", line 66, in _parse
File "site-packages\beautifulsoup-3.1.0.1-py2.6.egg\BeautifulSoup.py", line 1499, in __init__
File "site-packages\beautifulsoup-3.1.0.1-py2.6.egg\BeautifulSoup.py", line 1230, in __init__
File "site-packages\beautifulsoup-3.1.0.1-py2.6.egg\BeautifulSoup.py", line 1263, in _feed
File "HTMLParser.py", line 108, in feed
File "HTMLParser.py", line 148, in goahead
File "HTMLParser.py", line 226, in parse_starttag
File "HTMLParser.py", line 301, in check_for_whole_start_tag
File "HTMLParser.py", line 115, in error
HTMLParseError: malformed start tag, at line 46, column 12

Any clues?
Can you open your MOBI ebook with Mobipocket Reader?

rmhartman 05-17-2010 05:58 PM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
Getting "Unsupported version of kindle for pc" with unswindle v6rc1 and k4pc v1.1.0.

Is there a version of unswindle that handles this version of k4pc, or is there an installer for an earlier version of k4pc available?

Stream Recorder 05-21-2010 03:53 AM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
Quote:
Originally Posted by rmhartman (Post 18988)
Getting "Unsupported version of kindle for pc" with unswindle v6rc1 and k4pc v1.1.0.

Is there a version of unswindle that handles this version of k4pc, or is there an installer for an earlier version of k4pc available?
Getting "Unsupported version of kindle for pc" with unswindle v6rc1 and k4pc v1.1

fallnhopes 06-24-2010 11:47 PM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
I get the following error:
"error = failed to determine book path"

I'm using kindle for pc (beta version)
Any advice?

Stream Recorder 06-25-2010 07:38 AM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
Quote:
Originally Posted by fallnhopes (Post 19783)
I get the following error:
"error = failed to determine book path"

I'm using kindle for pc (beta version)
Any advice?
If you use Windows 7 or Vista, try to disable UAC.
You can also try to disable your firewall and antivirus.

fallnhopes 06-25-2010 10:42 AM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
Quote:
Originally Posted by Stream Recorder (Post 19811)
If you use Windows 7 or Vista, try to disable UAC.
You can also try to disable your firewall and antivirus.
I have both the UAC and firewall and antivirus disabled now. Still seeing the same error.

fallnhopes 06-28-2010 03:05 PM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
Quote:
Originally Posted by fallnhopes (Post 19813)
I have both the UAC and firewall and antivirus disabled now. Still seeing the same error.
I'm running on Windows Vista Home 6.0. Still having the same error appear. I'm new to this. Please help.

Sh4d0w927 08-02-2010 03:53 PM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
I was getting the same error. I moved my python scripts into my amazon content folder and still got the error. then I deleted the book, as I had downloaded it from an unsupported version of [url="http://amzn.com/gp/feature.html/ref=sv_kinh_1?ie=UTF8&docId=1000493771&tag=streami nmedia-20"]Kindle For PC[/url, and redownloaded. It worked with the re-downloaded copy. Hope that might work for you.

smt52 08-19-2010 06:01 PM

Re: Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
unswindle.py v7 worked for me on my Kindle DX, latest software as of 2010-08-20, Kindle 4 PC v1.1.1 as of 2010-08-20.

- Windows 7 x64 (x32 will work as well)
- Python 2.6.5, 32-bit (definitely not 64-bit it gives memory errors!!!)
- Kindle DX, international version (it should work with other Kindles as well)
- Kindle 4 PC, v1.1.1 (latest as of 2010-08-20)
- MobiDeDRM.py (version 0.06 will do)
- unswindle v7

Instructions:

1. Install Python.
2. Copy the two scripts into C:\Python26 (see link below)
3. Follow the instructions at the start of "unswindle.py".


To save time, you can download the required scripts and instructions here:

Code:
http://www.microchipc.com/download/Kindle_DX_no_DRM_python_scripts_2010-08-20.zip

TomF 08-23-2010 08:55 PM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
Quote:
Originally Posted by smt52 (Post 21012)
unswindle.py v7 worked for me on my Kindle DX, latest software as of 2010-08-20, Kindle 4 PC v1.1.1 as of 2010-08-20.

- Windows 7 x64 (x32 will work as well)
- Python 2.6.5, 32-bit (definitely not 64-bit it gives memory errors!!!)
- Kindle DX, international version (it should work with other Kindles as well)
- Kindle 4 PC, v1.1.1 (latest as of 2010-08-20)
- MobiDeDRM.py (version 0.06 will do)
- unswindle v7

Instructions:

1. Install Python.
2. Copy the two scripts into C:\Python26 (see link below)
3. Follow the instructions at the start of "unswindle.py".


To save time, you can download the required scripts and instructions here:

Code:
http://www.microchipc.com/download/Kindle_DX_no_DRM_python_scripts_2010-08-20.zip
After some unsuccessful previous attempts using Python 2.7 with wxPython installed which I used successfully to remove DRM from an old .prc file, I was successful following these instructions. I uninstalled Python 2.7 and wxPython and installed Python 2.6.5. My setup:

- Windows Vista Ultimate 32-bit
- Python 2.6.5
- no physical Kindle, my K2 went back within 30 days for a new K3!
- Kindle for PC v 1.01 (beta) that I found somewhere a few weeks ago
- MobiDeDRM.py (the version in the ZIP package)
- unswindle.py (the version in the ZIP package, renamed to unswindle.pyw)

Thanks for the detailed instructions and packing the Python scripts!

atourgates 09-01-2010 10:31 PM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
A couple tips:
With the latest version of Kindle 4 PC - I was getting the "unsupported version" message as well.

Here's how I solved it:
  1. Uninstall the latest version of Kindle 4 PC
  2. Download Kindle 4 PC 1.01 Beta from here
  3. Disconnect from the internet (Otherwise, Kindle 4 PC will automatically update itself without your permission)
  4. Install Kindle 4 PC 1.01 Beta
  5. Run Unswindle
  6. Kindle 4 PC will automatically open
  7. Open the book you want to de-DRM
  8. Close Kindle 4 PC
  9. A Unswindle dialog box will pop up asking you where to save your decrypted file. Pick a spot.
  10. You're done!

Chris9 10-05-2010 06:26 AM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
Hello there ... I'm new and looking for help taking the DRM off a Kindle book.

I bought a new kindle book today and tried to strip the DRM off it using the SAME exact techniques I had been using for the last few months up to just yesterday! But every time I use unswindle, it is converting another book in my K4PC library -- not the one that is new and opened in K4PC when unswindle opens it!

I double checked in the folder and the file has a .prc extension -- just like the majority of kindle books in my library that I've sucsessfully used unswindle on. The only thing different is that the file is a little larger than a normal ebook -- 3.5 mb -- but I don't think that has anything to do with it.

Anyone have any ideas?

Chris9 10-05-2010 07:08 AM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
Update: I just figured out it is a topaz prc file. So I used TopazExtract_Kindle4PC.pyw successfully ... but when I use topazfiles2html.pyw I just get an error message: "HTML conversion failed"

If I use topazfiles2xml.pyw it will work, but is there then a way to convert the xml files into an epub????

Julian 10-16-2010 09:22 AM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
OK, this is all scaring me a bit. I've already removed DRM from all my purchased Palm eReader books and converted them to ePub but now I want to buy new stuff and there's no escaping the fact that the Kindle Store has way more content than iBooks. I want to keep my entire library in the same reader so I now want to but a test book from the kindle store and convert that to ePub as I expect that this will then become my normal method of buying ebooks.

The test book I plan to buy is http://www.amazon.co.uk/Birdsong/dp/B0031RS68M/. Am I fairly safe in assuming that this (and other mainstream contemporary fiction from big publishers) is likely to be in the basic AZW format? If so then am I in the right thread as far as stripping the DRM is concerned? Is atourgates' 2nd Sep 2010 post a fair summary of the current best practice?

Has anyone got the procedure working without needing to roll back the K4PC version or is this still a necessary step? Even better, is there some tool chain that makes it possible to strip the DRM without having K4PC installed or is this really the only way to get around Amazon's "obfustication of the PID" issue?

This all looks way more complicated and scary than my experiences with converting my B&N/eReader books but the prize (access to the Kindle content) is far greater so I guess that I need to climb this mountain.

- Julian

fernandoch 11-16-2010 05:51 AM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
I used the version Kindle 4 PC 1.0.1 Beta 1 and it worked for me, I downloaded it from here

http://stream-recorder.com/forum/sho...58&postcount=2

It worked perfect!

Kirok 12-13-2010 11:01 AM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
I've tried multiple tools (Skindle, Unswindle etc) and I'm getting partially corrupted mobi output. I can't seem to find where to post a bug report so I'm posting here:

Check this thread for more details:

Odd partially corrupted output: AZW to MOBI

technogeekery 12-13-2010 09:54 PM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
Thanks all for some great advice. I have successfully decrypted DRM'ed Kindle .azw files into unencrypted .mobi files, and can now bring them into Calibre and convert them to epub for my Sony Reader. Hooray, I can buy books from Amazon now! Thanks to all for your advice.

Some notes
  • Like TomF, Python 2.7 didn't work for me, 2.6.5 was successful
  • The zip file in smt52's post was great, meant that I didn't have to mess around with making .py files from test files
  • The version of unswindle.py in that file (v7) works for Kindle 4 PC up to release dates 29.06.2010 so you don't have to download the very old beta version. It doesn't work with the current version (1.3.0 dd 12.12.2010) so you'll need to uninstall that if you have it, reinstall an older version (the link given earlier for filehorse downloads is good) and make sure you are offline when you install it, otherwise it auto-updates).
  • Make sure the filename of the input and output files don't have whitespace, otherwise it will fail. ie rename the original .azw file and the mobi file you want to produce with no spaces or special characters (underscore is fine) .
  • Bingo - it works like magic

Thanks again!

emeyesee 12-15-2010 01:27 PM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
I cannot download swindle... the site that hosts the program is blocked by the company I work for, and I have no other access to internet (I live on a base). In addition, I have NO CLUE how to use swindle... it took me long enough to figure out skindle, because I'm not very techno-savvy.

Is there another way to download swindle AND somewhere to find instructions to work it?

(Thanks, this forum has already been super helpful!)

Stream Recorder 12-15-2010 02:10 PM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
Quote:
Originally Posted by emeyesee (Post 23755)
I cannot download swindle... the site that hosts the program is blocked by the company I work for, and I have no other access to internet (I live on a base). In addition, I have NO CLUE how to use swindle... it took me long enough to figure out skindle, because I'm not very techno-savvy.

Is there another way to download swindle AND somewhere to find instructions to work it?

(Thanks, this forum has already been super helpful!)
If you're talking about unswindle, then you can download it either from the links above. You can also download DRM Tools 2.3 which includes unswindle, skindle and other DRM removal tools:
Code:
http://www.mediafire.com/?2ibexwv6a7d5saw
http://hidemyass.com/files/qcZos/
As for the instructions for unswindle, see the second post of this thread:
How to use unswindle

Delph1an 02-09-2011 07:56 PM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
Quote:
Originally Posted by atourgates (Post 21203)
A couple tips:
With the latest version of Kindle 4 PC - I was getting the "unsupported version" message as well.

Here's how I solved it:
  1. Uninstall the latest version of Kindle 4 PC
  2. Download Kindle 4 PC 1.01 Beta from here
  3. Disconnect from the internet (Otherwise, Kindle 4 PC will automatically update itself without your permission)
  4. Install Kindle 4 PC 1.01 Beta
  5. Run Unswindle
  6. Kindle 4 PC will automatically open
  7. Open the book you want to de-DRM
  8. Close Kindle 4 PC
  9. A Unswindle dialog box will pop up asking you where to save your decrypted file. Pick a spot.
  10. You're done!
Worked here also. At least I can read the books I bought on iBooks (iPad, iPod, iPhone).

NOTE: first time the Kindle for PC 1.01 Beta runs, make sure the internet is turned off. But if you go into Settings=>Updates
and uncheck the "Automatically install updates when they are available without asking me" box, it will also work.

Thank you for allowing me to actually allowing me to use the artistic content without feeling like I'm living in a police state.

-D

Delph1an 02-12-2011 04:39 AM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
Quote:
Originally Posted by Stream Recorder (Post 17771)
How to use unswindle

Note that unswindle uses mobidedrm, so it can't remove DRM protection from Topaz .tpz ebooks.
I just bought a book and I am getting the "Error: cannot decrypt Topaz format book"

Is there a way to get around it? Calibre says it's a PRC, not a tpz file.

-D

Stream Recorder 02-12-2011 01:08 PM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
Quote:
Originally Posted by Delph1an (Post 25268)
I just bought a book and I am getting the "Error: cannot decrypt Topaz format book"

Is there a way to get around it? Calibre says it's a PRC, not a tpz file.
unswindle can remove DRM protection from .azw files, not topaz .tpz files. See other ebooks DRM removal software

jennece@live.com 02-23-2011 02:51 PM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
I know this is an old thread, but, I cannot get it to work......... I guess I don't understand what I am doing. Do I need to download all the pasties??????? and then put it with the dark reverser in one file? I am confused. Any help would be appreciated!!

Thanks!

Stream Recorder 02-23-2011 10:21 PM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
Quote:
Originally Posted by jennece@live.com (Post 25595)
I know this is an old thread, but, I cannot get it to work......... I guess I don't understand what I am doing. Do I need to download all the pasties??????? and then put it with the dark reverser in one file? I am confused. Any help would be appreciated!!
Just download DRM Tools Archive instead. Then try to use a Calibre plugin first. If it doesn't work, see other options. Read the sticky threads to learn more.

supraman215 02-27-2011 02:19 PM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
this is the error I get. I'm running ubuntu. Python in wine.

Traceback (most recent call last):
File "C:\Python26\unswindle.py", line 850, in gui_main
unswindler = Unswindler()
File "C:\Python26\unswindle.py", line 727, in __init__
self._mobidedrmpath = self._get_mobidedrm_path()
File "C:\Python26\unswindle.py", line 730, in _get_mobidedrm_path
basedir = sys.modules[self.__module__].__file__
AttributeError: 'module' object has no attribute '__file__'


What am I doing wrong?

Stream Recorder 02-28-2011 07:25 AM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
Quote:
Originally Posted by supraman215 (Post 25688)
this is the error I get. I'm running ubuntu. Python in wine.
May be Python and/or Kindle 4 PC don't function properly in Wine.

any ANONYMOUS forum user 03-21-2011 06:51 PM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
This is all I get from python:

IDLE 2.6.6
>>> python mobidedrm.pyTitle-Of-Book.azwTitl-Of-Book.mobi<PID#>


SyntaxError: invalid syntax

In which the mobidedrm is highlighted in red.

Suggestions?

Stream Recorder 03-22-2011 02:14 AM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
Quote:
Originally Posted by any ANONYMOUS forum user (Post 26357)
This is all I get from python:

IDLE 2.6.6
>>> python mobidedrm.pyTitle-Of-Book.azwTitl-Of-Book.mobi<PID#>


SyntaxError: invalid syntax

In which the mobidedrm is highlighted in red.

Suggestions?
It should be
Code:
python mobidedrm.py Title-Of-Book.azw Titl-Of-Book.mobi PID
Have you tried to use a Calibre plugin instead?

Or have you tried to use mobidedrm directly?

gjplaceres 04-14-2011 06:06 AM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
I follow the instruction download the version that work with unwindle and the process complete without error. But always produce the same book even I select a different one. Any suggestion?

Stream Recorder 04-14-2011 11:50 AM

Re: Removing DRM protection from Kindle for PC ebooks using unswindle


 
Quote:
Originally Posted by gjplaceres (Post 27541)
I follow the instruction download the version that work with unwindle and the process complete without error. But always produce the same book even I select a different one. Any suggestion?
I use a Calibre plugin instead. The DRM removal plug-ins for Calibre are awesome... They have reduced the amount of questions in this forum significantly.

Download the Calibre plug-ins and other DRM removal tools from the following thread:
ebook DRM removal tools archive


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