nvram IASUCatalogURL=”http://swscan.apple.com/content/catalogs/others/index-10.13-10.12-10.11-10.10-10.09-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog”
nvram IASUCatalogURL=”http://swscan.apple.com/content/catalogs/others/index-10.13seed-10.13-10.12-10.11-10.10-10.09-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog”