Announcing the update on Facebook, Hugo Barra, Vice President, Xiaomi Global, said, "Today we released an over-the-air system update (v45) for the Redmi 1S. This release incorporates feedback received from a large number of users and addresses a few important issues."
According to Barra, the Xiaomi Redmi 1S system update (v45) for India fixes a major heating issue with the smartphone, using an improved thermal control algorithm to better regulate temperature and keep it under 38-degrees Celsius in normal usage conditions.
The company has also made some improvements to the memory (RAM) management in MIUI, as users were complaining that "background apps are sometimes getting killed more aggressively than they would expect (for example, music player stopping while user is playing a 3D game)." Additionally, Barra said that the update also addresses performance issues such as frame rate drops and UI lag prevalent during computationally intensive tasks like gaming.
On Tuesday, Xiaomi is conducting its sixth flash sale of the Redmi 1S. The flash sale will kick off at 2pm IST on Flipkart for registered users with 1,00,000 units available.
Notably, this is first flash sale that will see up to 1,00,000 Redmi 1S units going on sale, an increase of 40,000 units compared to the last two flash sales which saw 60,000 being made available.Catch the latest from the Consumer Electronics Show on Gadgets 360, at our CES 2026 hub.