If anyone would like to test something, I have made some modifications to sysUpdater to hopefully make downgrading more stable. UPDATE: This has been tested, with reports of success. Use at your own risk, however, as always with downgrading.
This contains two primary modifications:
- Deletes each title before installing its replacement, rather than deleting every title to downgrade before installing anything. This ensures that there won't be a bunch of missing titles if a downgrade fails.
- When downgrading, installs NATIVE_FIRM after all other titles, rather than before, to ensure that there won't be an older NATIVE_FIRM incompatible with remaining newer titles after a failure.
Here it is:
https://www.dropbox.com/s/toxpj6gozq6kh82/sysUpdater.zip?dl=1
Source here:
https://github.com/Steveice10/sysUpdater