Nokia, the world's largest phone maker by volume, unveiled on Tuesday two new smartphone models running on a new version of its Symbian software platform.

The new models, the E6 and the X7, will go on sale for 340 euros ($491.6) and 380 euros respectively excluding subsidies and taxes, later this quarter.

In February, Nokia's new chief executive Stephen Elop dumped Symbian software -- which lost most of its lead on the smartphone market last year -- saying the company would instead use Microsoft Corp's unproven software as its primary platform.

Elop compared Symbian to a burning platform in a widely leaked internal memo, saying it was not good enough for Nokia's future.

On Tuesday Nokia unveiled a new version of Symbian software, with new icons, improved text input, faster Internet browsing and a refreshed Ovi Maps application.

Several Nokia executives have attempted to walk back from Elop's February comments and limit the damage he did to Symbian products, said Tero Kuittinen, analyst at MKM Partners.

It's just a bit too late to put Humpty Dumpty back together. Developers are bailing out in droves, he said.

(Reporting by Tarmo Virki)