This update
JHCMIBL50.0 was released sometime around early February 2015. Users reported that there is improvement in performance but poorer battery life, which kind of make sense.
As for Malaysian users, unfortunately the +60 problem still persist in the SMS app. I wonder if the devs are even doing their job and this problem is still not solved update after update.
As for my Redmi 1S, it is still on version 43. Still waiting patiently for official MIUI V6 that is based on KitKat.
Changelog for update JHCMIBL50.0
System
Optimization - MIUI system font (12-19)
Messages
Fix - App might FC when using big font (09-24)
Email
Optimization - Mails integration in non-Chinese context (09-02)
Fix - Time display error in mails list (09-02)
Fix - Sometimes, log into more than one accounts would cause FC (09-02)
Fix - Downloaded attachments displayed as 0B when forwarding mails (09-02)
Fix - IMAP accounts' sync frequency could not be set as never (09-02)
Fix - Attachments number display wrongly when attachments reached the maximum number (09-02)
Fix - Sometimes, app would FC in entering after changing system language (09-02)
Fix - Meetings time displayed wrongly when viewing in Calendar (09-02)
Calendar
Fix - Could not set events created from messages to whole day (09-02)
Mi Cloud
Optimization - Internet request when syncing messages (12-19)
Download
Recovery ROM ( Global - WCDMA )
Fastboot ROMs
Singapore
Malaysia
Philipines
Indonesia
India