You can also downgrade manually without a backup: https://guide.sdsetup.com/usingcfw/manualchoiupgrade but it's a long guide and you *may* loose savedata. Don't attempt this if you don't know what you are doing and read all the warnings.
You can also downgrade manually without a backup: https://guide.sdsetup.com/usingcfw/manualchoiupgrade but it's a long guide and you *may* loose savedata. Don't attempt this if you don't know what you are doing and read all the warnings.