|  09-25-2021, 10:23 PM | #1 | 
| Wizard            Posts: 1,684 Karma: 3137505 Join Date: Dec 2010 Location: Jianghu Device: PW1, PW5, iPhone SE 2016, iPhone 13 Pro, iPad Pro 9.7, iPad Pro 2021 | 
				
				Can I go from 4.21 straight to 5.28?
			 
			
			I'm finally ready to upgrade - can I jump straight from 4.21 to 5.28?
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|  09-25-2021, 10:26 PM | #2 | 
| Well trained by Cats            Posts: 31,251 Karma: 61360164 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A | 
			
			AFAIK Calibre will migrate anything needed. Be aware that the 5.x upgrade will no longer be fully compatible with 4.x (DB changes) BACKUP BACKUP BACKUP your libraries Just in case | 
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|  09-25-2021, 10:37 PM | #3 | |
| Wizard            Posts: 1,684 Karma: 3137505 Join Date: Dec 2010 Location: Jianghu Device: PW1, PW5, iPhone SE 2016, iPhone 13 Pro, iPad Pro 9.7, iPad Pro 2021 | Quote: 
  And yes, I'm actually backing up my libraries right now as I was waiting for a response   | |
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|  09-25-2021, 10:42 PM | #4 | 
| Well trained by Cats            Posts: 31,251 Karma: 61360164 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A | |
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|  09-26-2021, 05:04 AM | #5 | 
| Custom User Title            Posts: 11,352 Karma: 79528341 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD | 
			
			Yup! Just backup your library and plugin; downgrading Calibre after upgrading the database will cause errors (mostly upon deleting book) and sometimes it's hard to get older plugin versions. Note that some incompatible plugins just silently deactivate themselves, so make sure everything's in order.
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|  09-26-2021, 09:49 AM | #6 | ||
| Wizard            Posts: 1,684 Karma: 3137505 Join Date: Dec 2010 Location: Jianghu Device: PW1, PW5, iPhone SE 2016, iPhone 13 Pro, iPad Pro 9.7, iPad Pro 2021 | Quote: 
 Quote: 
  (ducks and cats and all  ) I'm now updated to the latest version and everything works great, including the DRM plugins, my biggest worry and main reason for delaying on the upgrade. | ||
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