Official Stable ROM MIUI6 GLOBAL v6.6.1.0

Stock ROM Xiaomi Redmi 1S MIUI V6 Global
Scrrenshoot:

Tutorial Instalasi :

Note: Please do a full wipe in the process of flashing the ROM, otherwise it might cause problem to your phone. If you've already updated without doing a full wipe, and is facing "unfortunately.process com. android.phone has stopped" error, enter Recovery mode and clear cache & dalvik cache to solve the issue.

Download file Big OTA Update miui_HM1SWCGlobal_V6.6.1.0.KHCMICF_74644ba684_4.4 dibawah, dan letakkan file di internal memory atau sdcard kemudian rename menjadi "update.zip".
1. Sebaiknya unroot terlebih dahulu kalau menggunakan Mi-Recovery (native recovery) kecuali jika menggunakan TWRP recovery
2. Buka updater/pembaruan

3. Buka menu updaternya (klik icon pojok kanan atas)
4. Pilih opsi Reboot to recovery mode
5. Pilih English dalam mode recovery.
6. Pilih full wipe.
7. Pilih Install update.zip
8. Tunggu hingga proses selesai.
6. Reboot.
Tunngu hingga redmi menyala kembali, setelah ROM ter-install bisa lanjut Install GAPPS. langkahnya sama dengan no. 1 - no. 3, no 4 pilih file miui-6-gapps-kk-20150618-global.zip.

Download ROM: miui_HM1SWCGlobal_V6.6.1.0.KHCMICF_74644ba684_4.4.zip (642,26M)
Download GAPPS: miui-6-gapps-kk-20150618-global.zip (48M)

MIUI 6 Global Stable Build V6.6.1.0.KHCMICF for Redmi 1S Full Changelog

[Phone]
New - Added flash notification light for incoming calls (Call settings - Incoming call settings - Flash when ringing) (04-23)
New - Added Interactive Voice Response (IVR) shortcut feature for India (07-01)
Optimization - Optimized answering button icon of Internet calls (04-21)

[Contacts]
Fix - Add contacts to blocklist function disappeared (04-22)
Fix - Sometimes, search contacts function could not be used (04-22)
Fix - Dial button UI display error for dual-SIM devices (04-29)
Fix - FC error after checking SIM card storage (05-12)
Fix - Contacts app might not respond after logging out of Xiaomi account (05-12)
Fix - FC error caused by using single quotation marks when searching (05-21)
Fix - Lagging/ FC errors when importing or deleting SIM card contacts (05-27)

[Messaging]
New - Report junk messages feature (05-13)
Optimization - Optimized SMS conversation page UI style (05-12)
Optimization - Optimized contacts' namecard UI in messages (05-13)
Optimization - SMS delivery status can be updated more quickly (05-28)
Fix - Contact info in SMS displayed incorrectly after switching language (04-14)
Fix - Deleting audio messages might cause FC error (04-14)
Fix - Contact info at the conversation page top left corner might overlap (04-14)
Fix - MMS that were not sent could not be resent (04-14)
Fix - Unsent SMS could not be sent automatically after Airplane mode was disabled (04-24)
Fix - UI display error when editing message recipient (05-13)
Fix - Mi Band 'Vibrate for notifications' feature did not work after receiving a MMS (05-20)
Fix - Messaging app would stop responding if there were too many receipts when sending group messages (05-20)
Fix - Sometimes Slideshow messages could not be sent (05-27)

[Lockscreen, Status Bar, Notification Bar]
New - Added hotspot icon in status bar when portable hotspot is enabled (05-19)
New - Added charging icon in status bar (05-19)
New - Support displaying virtual network operators' names (05-19)
New - Lockscreen music control (05-27)
New - Added unlocking gesture recognizing mechanism to avoid unlocking caused by misoperation (06-02)
Optimization - Launching speed of notifications managing page (05-27)
Fix - Sometimes, long pressing notifications directed to the wrong app (05-06)
Fix - Sometimes, Gaussian Blur effect did not work when pulling down notification shade (05-12)
Fix - Sometimes, operator information displayed incorrectly for dual-SIM devices (05-12)
Fix - Sometimes Mi Band could not unlock screen (06-01)

[Home screen]
Fix - Icons were disappeared when opening folders in Mi Space (04-16)
Fix - Home screen wallpaper was enlarged after OTA update (04-16)
Fix - Locking apps had error when entering Recents page for the first time (05-12)

[Camera]
Fix - Sometimes SD videos' previews were stretched (06-11)
Fix - Sometimes, HDR button displayed status incorrectly (06-11)

[Music]
New - Sort music by name, date, and language in 'All songs', 'Offline', and 'Favorites' list (04-15)
Optimization - Added album names in music list (04-15)
Optimization - Album cover on playing page was set as small by default (04-15)
Fix - Volume would decrease if new songs were added to the current playing music list (04-15)
Fix - Lyric playing status was incorrect after skipping a song (04-15)
Fix - Listening to local music could choose streaming quality (04-15)
Fix - Part of playing page background was transparent (04-15)
Fix - Display error when entering playing page (04-15)

[Weather]
New - Share weather condition images. Support sharing images of selected modules (05-06)
Fix - Sometimes, weather animations displayed abnormally (05-19)
Fix - Sometimes, city weather background was black (05-27)
Fix - Weather animation displayed incorrectly sometimes (05-27)
Fix - Sometimes raining animations did not change directions according to gravity sensor (06-02)
Fix - RAM leak caused by sharing weather conditions (06-02)

[Settings]
New - Added transition animation when connecting WiFi (05-21)
Optimization - Apps notification will not ring in Do not disturb mode (04-16)
Fix - Sometimes, unlock with Mi Band did not work (04-29)
Fix - Sometimes, incorrect WiFi password prompt did not show after a long time (05-21)

[File Explorer]
Fix - Files in WiFi router could not be opened (04-14)
Fix - Lagging issue when loading thumbnails (05-21)

[Email]
New - Contacts managing feature (05-12)
Optimization - Support retrying if failed to download email content (05-12)
Fix - IMAP and POP3 accounts could not open zip type attachments (05-12)
Fix - UI error when using large font (05-12)

[Browser]
Optimization - Optimized address bar height (05-26)

[Recorder]
Fix - Recording completed notification did not disappear after pressing the notification to enter Recorder (04-28)

[Calendar]
Optimization - New events can be created without titles (05-14)
Fix - Editing reminders might cause Calendar to FC (04-21)
Fix - Sometimes, weather condition displayed incorrectly in Calendar (05-28)
Delete - Removed Dismiss button for events notification reminders (06-02)

[Clock / Calculator]
Fix - UI display error when using large font (05-19)

[Security]
Fix - Sometimes lockscreen notifications displayed data usage incorrectly (07-01)

[Mi Cloud]
New - Alarm clock settings can be restored from Mi Cloud when switching to new devices (05-19)
Optimization - Optimized Mi Cloud settings page (05-19)
Fix - FC error in some situations (06-08)

source:
1. http://en.miui.com/thread-129784-1-1.html
2. http://en.miui.com/a-233.html

Credit:
MIUI English Forum, MIUI Forum Indonesia
FB Group Xiaomi Indonesia