Please make sure you choose the proper firmware for your pertaining DVR.
Download and unzip the file. ( DO NOT USE THE ZIPPED FILE ) Load the .pkg file on to your USB drive and perform the upgrade by attaching the USB drive to your DVR.
HD04P-NUBIX-1.4.6-07301.pkg.zip - 4ch Nubix RT Version
HD08P-NUBIX-1.4.6-07301.pkg.zip - 8ch Nubix RT Version
HD16P-NUBIX-1.4.6-07301.pkg.zip - 16ch Nubix RT Version
download the iMon iPhone software from
here.