u/faintoldrhyme

Solved - needed to download a DeACSM, and then not open the file before transferring it to Calibre. Opening the file marked it as already being engaged with another device somehow, and stopped the plugin from working.

• My decade-old Kindle is affected by Amazon's bricking of older Kindle devices
• I successfully installed Calibre and DeDRM and transferred books from Libby back in May
• I am trying the same process now and it is not working.
• My kindle has been in airplane mode the whole time and has not been updated.

My process:

• Borrow a book from Libby, 'read as Epub'
• This exports it as ACSM. I transfer this to my computer
• Open Calibre, ensure DeDRM is active, 'Add books'
• In Calibre, 'Title' = the book's file name. 'Author' is Unknown. 'Size (MB)' is '<0.1'.
• 'Convert books': I receive the error Could not convert the book because no supported source format was found

I've tried:

• Updating Calibre (version 9.11)
• Removing and re-installing DeDRM plugin
• Converting individually and bulk
• Configuring the e-ink DeDRM setting to add my Kindle's serial number, per the deDRM read-me

I can't figure out what's wrong. I did this in May with no problems. Did something update? Am I missing a step? Please help.

Solved - needed to download a DeACSM, and then not open the file before transferring it to Calibre. Opening the file marked it as already being engaged with another device somehow, and stopped the plugin from working.

To clarify: I'm not trying to steal books. Amazon released a new update intentionally bricking all older kindles, meaning I'm now unable to transfer borrowed books from Libby to my device even though it still operates perfectly. This workaround is the only way I can continue reading e-books on the kindle. The books are still automatically returned back to the library after the borrowing period, and I delete them off the device when I'm done reading.

• My decade-old Kindle is affected by Amazon's bricking of older Kindle devices
• I successfully installed Calibre and DeDRM and transferred book from Libby back in May
• I am trying the same process now and it is not working.
• My kindle has been in airplane mode the whole time and has not been updated.

My process:

• Borrow a book from Libby, 'read as Epub'
• This exports it as ACSM. I transfer this to my computer
• Open Calibre, ensure DeDRM is active, 'Add books'
• In Calibre, 'Title' = the book's file name. 'Author' is Unknown. 'Size (MB)' is '<0.1'.
• 'Convert books': I receive the error Could not convert the book because no supported source format was found

I've tried:

• Updating Calibre (version 9.11)
• Removing and re-installing DeDRM plugin
• Converting individually and bulk
• Configuring the e-ink DeDRM setting to add my Kindle's serial number, per the DeDRM read-me

I can't figure out what's wrong. I did this in May with no problems. Did something update? Am I missing a step? Please help.