What is the standard warranty duration? 11 October 2022 15:03 Updated All products sold on the GR online store are guaranteed for an initial period of 2 years following the date of invoice. Related articles GRIII manual download page. Where can I download the information on the GRIII HDF or GRIIIx HDF camera? I lost my warranty; can I get a copy of it? How to contact technical assistance? Where can I download new firmware, updates etc. for my device?