GX6621 1TUNER_16MB_DownloadTool
http://www.cwdw.net/downloads/New-05/Tools-Loaders/GX6621%201TUNER_16MB_DownloadTool.zip
GX6628 2TUNER_1Gb_DownloadTool
http://www.cwdw.net/downloads/New-05/Tools-Loaders/GX6628%202TUNER_1Gb_DownloadTool.zip