I'm currently dealing with GPL16956 microarray platform ( Arraystar human lncRNA microarray V3 Agilent-045997 (Probe Name Version). How to convert the probe ids to lncRNAs/gene or find the annotation file?
Since it is a custom designed microarray for the customer, you should either contact the author or try to find the gene/lncRNA/transcripts from the sequences using BLAST/BLAT.