Last week we reported about new firmware update rolling out to select Lumia devices in India. Microsoft India today confirmed that the latest OTA update that enables 4G LTE update is now available on the following devices : Lumia 1520, Lumia 1320, Lumia 1020, Lumia 930, Lumia 925, Lumia 920, Lumia 830, and Lumia 625.
Users of these devices can either install the latest update through the Push Notification or go to Settings > Phone update > Check for Update to manually download it. Then go to Settings > Mobile + SIM to enable 4G.
Also note that this update only supports FDD-LTE (1,800 MHz) band due to hardware limitation. Future Lumia devices in India will support both FDD-LTE (1,800 MHz) and TDD-LTE (2,300 MHz).