I have a G900A, the forced software update fails in every instance. The update downloads and attempts to install, after the install attempt the the device indicates that the 'software update was interrupted'. In another 24 hours it attempts again -- same failed result and very annoying. Current sw version is: G900AUCU4DPH2
A failed install on software updates is frequently caused by lack of memory. You'll want to clear the cache to free some space. Go into Settings > Storage > Cached Data > Clear Cached Data and download the update afterward.
If you receive the "Software update was interrupted" error afterwards, let us know so we can investigate further.
James, AT&T Community Specialist
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