Why Did the Software Update Fail?

ERROR_CLEARING_DIR(10)
Caused by being unable to delete a temporary directory used for the update process.

ERROR_MAKING_DIR(11)
Caused by being unable to create a temporary directory used for the update process.

ERROR_MAKING_GPGFIL(12)
Caused by being unable to create a directory used for decryption.

ERROR_COPYING_UPDATE(13)
Caused by being unable to copy update file into temporary update directory.

ERROR_CHANGING_DIR(14)
Caused by being unable to change to temporary update directory.

INVALID_GsurePG_PKG(15)
Caused when update package integrity check fails.

UPDATE_TOO_BIG(16)
Caused when extracted update file is too big.

INVALID_TARBALL(17)
Caused when update extraction fails.

UPDATE_FAILED(18)
Update failed.

INVALID_UPDATE_PKG(19)
Update script was not found in update file.

IN_PROGRESS(20)
Occurs when trying to cancel an update that is pass the point of being able to cancel.

UPDATE_TIMEOUT(21)
Update timed out.

INVALID_UPDATE_ARCH(22)

ERROR_DOWNLOADING_URL_UPDATE(23)
Error downloading update from URL/Cloud

UNKNOWN_ERROR(1001)
Unknown error