Can I go from 3.48 directly to 5.29?

Merbird · 10-08-2021, 12:40 PM

I thought I had read something about not being able to go directly from 3.48 to 5.0 when it originally came out. I am finally going to update, but now cannot find any information regarding this. Do I need to use a version of 4 to make a smooth transition?
Thanks for any help you can give me : )

kovidgoyal · 10-08-2021, 12:52 PM

yes, you can. You just cant go the other way from 5.x to 3.x

theducks · 10-08-2021, 12:53 PM

Calibre will do what is needed to do the update.
Some plugins will need updating because of Python changes. Many popular ones have been done. Alf has fixed his

Be sure to make a backup as the DB does get updated and you might have issues down grading

Merbird · 10-08-2021, 01:01 PM

Thank you so much for your quick responses. I will back up my current DB before the update. Thanks again : )

theducks · 10-08-2021, 05:58 PM

Quote:

Originally Posted by Merbird

Thank you so much for your quick responses. I will back up my current DB before the update. Thanks again : )

Remember, the DB must remain in lockstep with the exact library it belonged to. Once yo make additions or changes, the DB will no longer match the books (and in some cases, orphan those books).
The main reason it IF for some reason the 3>5 upgrade fails, you can recover and try again

rhyta · 10-22-2021, 06:53 PM

I am in the same boat, I have version 3.40.1, I last updated in 2019. I am a bit unsure of what to do since it has been such a long time so I am asking for some advice on what to do. I went into Calibre and backed up the books there. Is that all I need to do before updating the version? Thanks

ownedbycats · 10-22-2021, 07:22 PM

Make sure to backup your metadata.db; there's some changes to the database structure and reverting to an older Calibre after it upgrades tends to cause errors.

I also suggest backing up the plugins folder from appdata; sometimes getting older versions of plugins is tricky.

Then upgrade. Don't be surprised if some of your plugins seem to disappear - chances are they just failed to load and got deactivated because they're outdated. Just re-download the newest version.

rhyta · 10-29-2021, 03:41 AM

Quote:

Originally Posted by ownedbycats

Make sure to backup your metadata.db; there's some changes to the database structure and reverting to an older Calibre after it upgrades tends to cause errors.

I also suggest backing up the plugins folder from appdata; sometimes getting older versions of plugins is tricky.

Then upgrade. Don't be surprised if some of your plugins seem to disappear - chances are they just failed to load and got deactivated because they're outdated. Just re-download the newest version.

Are these on the Calibre software? (metadata and app data)

theducks · 10-29-2021, 10:14 AM

Calibre uses 2 Places (folders) for every session:

the %appdata% one is you User preferences and plugins (this is per Computer Logon) You want this entire folder tree in your backup

and the current Library (default is Calibre Library)

rhyta · 11-05-2021, 02:31 AM

Quote:

Originally Posted by theducks

Calibre uses 2 Places (folders) for every session:

the %appdata% one is you User preferences and plugins (this is per Computer Logon) You want this entire folder tree in your backup

and the current Library (default is Calibre Library)

Thanks, I'll give it a try.

rhyta · 11-17-2021, 03:44 AM

Just a note to TheDucks and OwnedbyCats (me too) I got the library backed up and downloaded the current Calibre software. Loaded the new plugins and got a couple of my newer e-books backed up. Appreciate the help.

10-08-2021, 12:40 PM	#1
Merbird Junior Member Posts: 6 Karma: 10 Join Date: Aug 2011 Device: Kinkle	Can I go from 3.48 directly to 5.29? I thought I had read something about not being able to go directly from 3.48 to 5.0 when it originally came out. I am finally going to update, but now cannot find any information regarding this. Do I need to use a version of 4 to make a smooth transition? Thanks for any help you can give me : )

10-22-2021, 07:22 PM	#7
ownedbycats Custom User Title Posts: 10,974 Karma: 75337983 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD	Make sure to backup your metadata.db; there's some changes to the database structure and reverting to an older Calibre after it upgrades tends to cause errors. I also suggest backing up the plugins folder from appdata; sometimes getting older versions of plugins is tricky. Then upgrade. Don't be surprised if some of your plugins seem to disappear - chances are they just failed to load and got deactivated because they're outdated. Just re-download the newest version. Last edited by ownedbycats; 10-22-2021 at 07:24 PM.

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10-08-2021, 12:52 PM	#2
kovidgoyal creator of calibre Posts: 45,349 Karma: 27182818 Join Date: Oct 2006 Location: Mumbai, India Device: Various	yes, you can. You just cant go the other way from 5.x to 3.x

10-08-2021, 12:53 PM	#3
theducks Well trained by Cats Posts: 31,056 Karma: 60358908 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	Calibre will do what is needed to do the update. Some plugins will need updating because of Python changes. Many popular ones have been done. Alf has fixed his Be sure to make a backup as the DB does get updated and you might have issues down grading

10-08-2021, 01:01 PM	#4
Merbird Junior Member Posts: 6 Karma: 10 Join Date: Aug 2011 Device: Kinkle	Thank you so much for your quick responses. I will back up my current DB before the update. Thanks again : )

10-22-2021, 06:53 PM	#6
rhyta Connoisseur Posts: 68 Karma: 301388 Join Date: Sep 2017 Location: West Valley City UT Device: Nook Glowlight 4 Pearl Pink, ST Nook w/Glowlight (2)	I am in the same boat, I have version 3.40.1, I last updated in 2019. I am a bit unsure of what to do since it has been such a long time so I am asking for some advice on what to do. I went into Calibre and backed up the books there. Is that all I need to do before updating the version? Thanks

10-29-2021, 10:14 AM	#9
theducks Well trained by Cats Posts: 31,056 Karma: 60358908 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	Calibre uses 2 Places (folders) for every session: the %appdata% one is you User preferences and plugins (this is per Computer Logon) You want this entire folder tree in your backup and the current Library (default is Calibre Library)

11-17-2021, 03:44 AM	#11
rhyta Connoisseur Posts: 68 Karma: 301388 Join Date: Sep 2017 Location: West Valley City UT Device: Nook Glowlight 4 Pearl Pink, ST Nook w/Glowlight (2)	Just a note to TheDucks and OwnedbyCats (me too) I got the library backed up and downloaded the current Calibre software. Loaded the new plugins and got a couple of my newer e-books backed up. Appreciate the help.

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