Using FIJI's updaters
If you are using FIJI, there is a separate updater that updates multiple plugins, including Bio-Formats. You can find it under FIJI’s help menu.
Updates in the FIJI updater are not always Bio-Formats’ most recent trunk build or stable release; they are versions that are known to remain compatible with other plugins that depend upon Bio-Formats. You should use the FIJI updater if you use other plugins that might use Bio-Formats. However, if you encounter a bug within Bio-Formats, use Bio-Formats’ own updater to see if the latest trunk build fixes it.