idrac gives you “RED006: Unable to download Update Package” and plenty of headaches during updates? it happened to me while jumping over few updates and going straight from 2.41.40.40 to 2.52.52.52. no amount of racadm racreset would help.
upgrading first to 2.50.50.50 and only then to 2.52.52.52 did the trick for me.