In case of older SIUSLoader, it can happen, that you get entries, which are not supported of SIUSLoader. This devices are signed with a red dot and a “?”. This devices are to ignore.
Download to such devices are not to start, but will normally not have any effect.
The example shows three entries (L5Mip, LonIpDe…, ?###?##) of a STYX to LON converter STL.