Micromax's Yu Yureka has started receiving its first OTA (over-the-air) update that brings incremental bug fixes. In other news, 15,000 units of Micromax's Yu Yureka smartphone will be made available on Thursday via the fourth flash sale that kicks off at 2pm IST on Amazon India for registered users.

We have started rolling out the Bug-fix OTA update. Watch out for the notification on your YUREKA! pic.twitter.com/Z8KuyyS0vL -- YU (@YUplaygod) February 4, 2015

The company announced the update in a tweet and referred to it as a "bug-fix OTA update." Notably, the update is an incremental update and brings security fixes, improvements for proximity sensor and dual-SIM functionality. The update comes with build number XNPH05Q and is about 73MB in size.

Yu on Wednesday announced the number of units going on sale in the fourth flash sale in a tweet.

15000 units available for the Yureka sale on 5th February. The sale begins at 2 PM on @amazonIN pic.twitter.com/roTyXeV9uw -- YU (@YUplaygod) February 4, 2015

The third flash sale of Micromax's Yu Yureka (Review | Images) last week saw 10,000 smartphones going out of stock in 3 seconds on Amazon India while the second flash sale saw 15,000 units being grabbed in just 4 seconds. The first flash sale that had seen 10,000 units go out of stock in 3 seconds also saw a lot of controversy with site glitches including incorrect price listings and allegations the company actually made only 3,000 units available for sale.

Last week, the company announced a special Yu Yureka sale for contest winners and "impacted customers" who were unable to avail the smartphone in the previous two sales to due to incorrect price listings or payment issues, as well as for those customers that received defective or damaged units.

Priced at Rs. 8,999, Micromax's Yu Yureka offers some rather impressive specifications at the price. The dual-SIM smartphone features Cat. 4 4G LTE connectivity, and runs Cyanogen OS 11 based on Android 4.4.4 KitKat. It bears a 5.5-inch HD (720x1280 pixels) IPS display with Gorilla Glass 3; a 64-bit 1.5GHz octa-core Snapdragon 615 SoC (MSM8939); an Adreno 405 GPU; 2GB of RAM; a 13-megapixel Sony Exmor CMOS sensor rear camera with an f/2.2 aperture and flash; a front-facing 5-megapixel fixed-focus camera; 16GB of inbuilt storage expandable via microSD card (up to 32GB), and a 2500mAh Li-Po battery.