http://www.jpost.com/IranianThreat/News/Article.aspx?id=267037 "Iran's construction of the new drone, announced by Revolutionary Guards Commander Brigadier Amirali Hajizadeh, is based on data extracted from the downed spy plane, which the Iranian military claims it was able to ground without causing substantial damage to the aircraft. Hajizadeh also discussed Iran's successful decoding of the memory of the US's RQ -170 Sentinel, according to an Iranian News Agency (IRNA) report on Sunday. The two commanders added that Iran repaired any minor damage that had been caused to the drone." It's widely speculated that China was involved in the means of the capturing of the drone.. maybe they are involved in development, too. I guess we'll know by how many failures Iran creates.