The Finnish phone maker reiterated that customers can either download and install the patch or exchange their phone at an AT&T store. Nokia had originally said to expect the software update to be ready by Monday.
“Consumers now have the opportunity to update their AT&T version Nokia Lumia 900 software through Zune and Windows Phone 7 Connector for Mac earlier than anticipated,” Nokia said in a statement.
All Lumia 900 customers, regardless of whether they have had problems, will get a $100 credit, Nokia U.S. head Chris Weber told AllThingsD earlier this week. Customers that buy or order a Lumia 900 before midnight PT on April 21 will also get the credit.
That effectively makes the device free, for now, since AT&T had been selling it for $99 with a new two-year contract.
Nokia has gotten plaudits for its prompt and generous dealing with the issues. However, the glitches still threaten to diminish the launch of a product seen as key to the ambitions of Nokia and Microsoft to take on the top smartphones and re-establish themselves as serious players in the U.S. market.