Xiaomi has released a global beta build of its MIUI 6 ROM for the Redmi 1S smartphone. The company introduced MIUI 6, a major upgrade to MIUI ROM last year, but only few Mi devices such as Mi 4, Mi 3, Redmi Note, Redmi 2 and MiPad run on the stable MIUI 6 ROM. Developer ROMs are available for Mi devices
