Is it possible to downgrade?
2136
How to roll back Ubuntu to a previous version?
25295
How do I downgrade Minecraft to play on a server running an older version?
101714
Is there any way to roll back the most recent upgrade?
69028
Can I downgrade to macOS Mojave if I buy the new 2019 MacBook Pro?
72031
Can every Android device be updated to the most recent Android version?
33540
How can I switch a 32-bit installation to a 64-bit one?
12578
How do I upgrade to a newer version of Ubuntu?
1520
How to install software or upgrade from an old unsupported release?
5405
Can I install any iOS version I wish by picking and choosing which firmware to restore?
68597
Will upgrading Ubuntu remove installed software?
7580
How to safely upgrade from an older Ubuntu version to a newer one?
151232
downgrading rails 4 to 3.2
139753
Is it possible to downgrade packages installed with ELPA?
149205
Downgrade PHP 5.6 to PHP 5.5
27831
Can't downgrade database from version 2 to 1
6010
Is it possible to downgrade an OEM Windows 8 install to Windows 7?
94446
Revert to upstart