[System]
New – Mi 3 W/C and Mi 4 W/C updated to MIUI 6 (8-23)

[Lockscreen, Notification shade, Status bar]
Fix – The security hole that users didn't need to confirm the old password while setting a new password (8-26)

[Music]
New – Support AirPlay wireless speaker (8-26)

[Security]
New – 'Ignore data usage' option added to make data statistics more accurate (8-26)

[Scanner]
Fix – Some severe bugs (8-28)

MIUI ROM 4.7.25 Full Changelog

[System]
Fix – Sometimes, Power saving mode would FC (Mi 2/2S) (7-21)

[Phone]
Fix – Could not set volume to the maximum level during a call (Mi 3 WCDMA/CDMA) (7-21)

[Messaging]
Optimization – Optimized the function of recognizing time information in messages (7-24)

[Theme]
Fix – Booting music didn't work when using default theme (7-25)

[Mail]
Optimization – There will be a prompt if a mail is not sent in 5 minutes (7-24)
Optimization – 'Quick response' will be sent to all (7-24)
Fix – When using QQ mail, clicking on contacts avatars would cause display error (7-24)
Fix – After pressing 'Refresh', the state displayed wrongly (7-24)
Fix – Send later button didn't work when failed to send a mail (7-24)

[Security]
New – New Saver page UI (7-23)
New – Data saver exceptions list, allow some apps to use data without limit (7-24)
Optimization – Shared blocklist only blocks numbers in Blocklist. In customized rules, calls from strangers are allowed by default (7-24)

[Downloads]
New – Added Xunlei download accelerating service (7-23) 

MIUI ROM 4.7.18 Full Changelog
[System]
Fix – Power button couldn't wake screen (Mi Pad) (7-16)
Fix – Phone turning off caused by changing system time (Mi 3 WCDMA/CDMA) (7-16)

[Phone]
New – Added video calls menu. Support several frequently used phone numbers (7-16)

[Messaging]
Optimization – Optimized time recognition method in a message (7-16)
Fix – Couldn't snyc the settings when a private contact's messages were pinned (7-16)
Fix – Private messages would be read out after enabling messages text -to – speech output in Car mode (7.17)

[Camera]
Optimization – Video anti-shake effect (Mi 3 WCDMA/CDMA) (7-16)

[Music]
Fix – Music would stop playing if OTG cable was plugged out (7-15)
Fix – Sometimes app would FC when downloading music (7-15)

[Market]
Optimization – Optimized cremental updating process, enhanced success rate of updating apps (7-15)
Optimization – Do not need to login to use Market in first launch (7-15)
Fix – Sometimes app would FC after ROM was updated (7-14)

[Calendar]
Optimization – Added weekly view (7-15)
Optimization – Use floating notification for calendar popup windows in full screen tasks (7-15)
Fix – Words in events were blurred in weekly/daily views (7-15)

[Security]
Fix – Graphic glitches of homepage image (7-15)

MIUI ROM 4.7.11 Full Changelog
[System]
Fix – When using QQ video chat, the other side couldn't hear (Mi 3 WCDMA/CDMA) (7-9)
Fix – Sometimes couldn't fully charge (Mi Pad) (7-9)
Fix – No sound problem caused by media server crash (Mi Pad) (7-9)

[Home screen]
Fix – Sometimes, home screen icons were repeated (7-10)
Fix – Sometimes, Kuaipan app icon was in wrong position (7-10)

[Messaging]
Fix – Sometimes, sender showed as 'WAP Push' (7-9)

[Gallery]
Fix – Sometimes, couldn't download thumbnails or original images (7-7)

[Mail]
Fix – Could not sync batch delete result to multiple devices (7-9)
Fix – Sometimes, attachment tiles were empty (7-9)
Fix – Errors in Foxmail default settings (7-9)
Fix – Sometimes, deleted mails would show again (7-9)

[Browser]
New – Ads block function (7-9)

MIUI ROM 4.7.4 Full Changelog
[System]
Fix – No sound when using QQ bluetooth and  earphone VOIP (Mi Pad) (7-3)
Fix – When playing records with earphones plugged in, dragging the status bar would cause the sound to play in speaker (Mi 3 WCDMA/CDMA) (7-3)
Fix – Incoming calls ringtone would be interrupted by touch sound when earphones are plugged in (Mi 3 WCDMA/CDMA) (7-3)

[Phone]
Optimization – Optimized compatibility of UIM card (Mi 3 WCDMA/CDMA) (7-3)

[Messaging]
Fix – Sometimes failed to send SMS (7-1)

[Camera]
Optimization – Optimized brightness when taking photos outdoor (Mi Pad) (7-3)
Optimization – Optimized touch metering and face metering (Mi Pad) (7-3)
Optimization – Optimized sharp parameter (Mi Pad) (7-3)
Fix – Blooming issue (Mi Pad) (7-3)

[Gallery]
Fix – Couldn't add pictures to cloud album when viewing images in file list mode (6-30)
Fix – Could add images to a cloud album that's not shared with you (6-30)
Fix – App would FC when adding images in Xiaomi WiFi Router to cloud album (6-30)

[Explorer]
Fix – when using FTP, the management status didn't show in the status bar (7-3)

[Browser]
Fix – Sometimes there were errors going forth or back when viewing webpages (7-2)

[Security]
New – Added Saver in Data usage to help save mobile data usage (7-2)

[Video]
Fix – When playing 4K video, pause would cause graphic glitch (Mi Pad) (7-3)

MIUI ROM 4.6.27 Full Changelog

[Home screen]
New – MIUI Market apps downloading/Installing status will show in home screen

[Gallery]
Optimization – Enhanced image viewing speed
Fix – Supporting sending videos to cloud albums
Fix – App would FC when adding an image from Xiaomi WiFi Router to cloud albums

[Music]
Optimization – New higher quality music purchase page. Support purchasing for a quarter or a year

[Compass]
Fix – Errors in Calibrate compass function

[Browser]
Optimization – Optimized cache mechanism

[Security]
Fix – Could not clean empty folders

[Phone]
Fix – It was slow to register to WCDMA network in booting up in some areas

MIUI ROM 4.6.20 Full Changelog
[System]
Fix – Sometimes, volume would change when playing music using bluetooth

[Gallery]
Optimization – When viewing images from Camera, the title bar and editing bar will show by default
Optimization – Support pinching to change sizes of Gif images
Fix – Unclear watermarks on pictures taken in HDR/RAW modes

[Themes]
New – Added 'Declaration and Impunity' popup message when first connecting to the Internet or first using the app
New – Added option to set MIUI system font
New – Resources introduction and recommendation for new users
Optimization – Optimized the layout of themes list
Fix – Free trail notification wouldn't disappear
Fix – Preview images wouldn't show when sharing local fonts
Fix – Couldn't set MMS images as wallpaper

[Security]
Optimization – Enhanced smoothness of Permission – Manage App Permissions page

[Calendar]
Fix -  Sometimes, app would stop responding

[Mail]
Fix – App might FC when setting up Hotmail accounts
Fix – Inaccurate attachments sizes for IMAP protocol accounts
Fix – Mistakes in sorting attachments by date
Fix – For some POP3 protocol accounts, couldn't download an attachment again after deleting it in the attachments management page
Fix – Sometimes, app would fake freeze when downloading attachments
Fix – Sometimes, mail content would show as unrecognizable codes
Fix – yeah.net mails couldn't download attachments
Fix – Some POP3 accounts might receive mails repeatedly
Fix -  Sometimes, couldn't download images automatically even when connected to WiFi

MIUI ROM 4.6.13 Full Changelog
[System]
Fix – Sometimes could not get IP address

[Gallery]
Fix – Sometimes Gallery would FC when opening pictures from a third-party app

[Mail]
Optimization – There will be a reminder if a mail was not sent out
Optimization – The add attachment button will always show in the mail composing page
Fix – Could log into a same account repeatedly
Fix – Sometimes there were mistakes in folders number counting if there were several accounts
Fix -  Attachments would continue downloading after pressing stop
Fix – Sometimes could not forward mails with attachments
Fix – Errors in signature UI after saving a mail as draft
Fix – App might exit abnormally when editing account name

[Browser]
New – Support pulling down to refresh cloud tags
New – Sync history and Sync webapp functions added
Fix – It would still automatically fill in usernames after clearing the saved passwords

[Radio]
Fix – There was no sound when playing using the speaker
Fix – There was no sound when recording using FM Radio

[Calendar]
Fix – Could not open calendar if not logged into a Xiaomi account

MIUI ROM 4.6.6 Full Changelog

[System]
Fix -  Slow charging speed
Fix – Sometimes couldn't open WLAN after booting
Fix – Sometimes couldn't connect to any WiFi router without rebooting
Fix – Recorder couldn't adjust volume on speaker
Fix – OTG couldn't write in

[Messaging]
Optimization – Optimized UI of Notification messages. Support viewing messages by types by pulling down
[Camera]
Optimization – It blurred when long pressing to take pictures

[Gallery]
New – Press the blank area to add pictures when Cloud images page is empty
New – Support editing pictures in cloud albums
New – Support pinching to return to image list when viewing pictures in full screen

[Mail]
Fix – Some POP accounts could not log in
Fix – ZIP attachments did not automatically open after downloading
Fix – Using 'Sort by' in searching results may cause FC
Fix – Could not send mails by clicking the email address in contact details page

[Browser]
Fix – Some webpages said password was not filled in after auto-fill
Fix – Some webpages didn't zoom in/out by double press

MIUI ROM 4.5.30 Full Changelog

[System]
Fix -  GPS did not use other satelites than GPS when there's not network

[Messaging]
Fix – Homescreen popup window did not show incoming messages' content

[Themes]
Optimization – Boot animation after updating
Optimization – Ringtone selection page in Mi Pad

[Mail]
New – Added 'Resend all' function in Outbox
Optimization – Enhanced speed of batch operation
Optimization – Exchange account login procedure
Fix – Sometimes app would FC when deleting mails by swiping to the left
Fix – Sometimes there were two back icons at More – Sync options
Fix – Sometimes it would report error when sender box is empty

[Browser]
Optimization – Optimized Text magnifying glass when selecting texts in a webpage. The content near the selected area will also be shown in the magnifying glass

[Virus Scan]
Fix – ‘Pause’ button did not work when scanning

[Messaging]
Optimization – Support recognizing time information in a message and adding it to Calendar

[Lockscreen, Status bar, Notification shade]
Optimization – The two arrows of the Data toggle always show when connecting data Fix – Sometimes, the No SIM Card icon would not disapper

[Camera]
Fix- Sometimes camera lost focus when flashlight was turned on

[Music]
Optimization – Popup menu of online music list
Fix – Some bluetooth earphones wouldn't show music information on it's screen

[Weather]
New – Added two weather types: Freezing rain and hail

[Settings]
Fix – Incoming calls from people in the exceptions list of DND did not ring

[System]Fix – Sometimes could not register Xiaomi Account using the current phone number
Fix – Could not use VPN

[Calendar]
Fix – Sometimes app would FC in opening

[Blocklist]
Fix – DND exceptions list and Blocklist exceptions list caused conflict

[Clock/Calculator]
Fix – Sometimes alarm clock delayed in ringing

[Mi Cloud]
Fix – After choosing Do not merge in the popup window of merging Mi Cloud data, it did not direct to the next step

NEW 4.5.11 Custom inside all the best

for REV_B

MIUI 4.5.9 Full Changelog

[Messaging]
Optimization – Show pop-up notifications when clicking URL in MMS
Fix – Sometimes app might FC when enabling cloud messaging in Mi Cloud

[Lockscreen, Status bar, Notification shade]
New – Number of an app's notifications shown on it's icon supports third-party customization
Optimization – Icons of toggles in the Notification shade
Optimization – Status bar style
Optimization – Do not support swip down gesture for floating notifications

[Home Screen]
New – App names and other home screen elements will automatically change colors with wallpapers
New – Support auto-filling blanks after batch deleting icons in home screen editing mode
Fix – Sometimes, icons were repeated
Fix – Sometimes, icons in the Dock were in wrong order

[Music]
New – Support syncing songs to Mi Cloud (Settings – Mi Cloud – Music)
Optimization – Use high definition pictures in the online music details page
Fix – Incorrect round corners in the online music details page

[Weather]
Fix – Bottom half of the main page was blank

[Mail]
Optimization – Mail Login page
Fix – It would go back to the homescreen after logging into account
Fix – Receiver names in the Cc box might show unrecognizable code
Fix – Receiver names might show unrecognizable code
Fix – Incorrect form in the composing email page

[Browser]
New – Show searching results in a new page after choosing Find in page for selected text
New – Data saving mode
New – Online page text font will change with theme font
New – Support WML page
Optimization – New kernel supports system theme font
Fix – Music would continue playing after being discontinued

[Calendar]
Optimization – Month view style
Fix – Incorrect page form when creating new events
Fix – App would FC when clicking on the location in an event
Fix – Sometimes, page moved slowly when swiping

[Other]
Fix – Sometimes com.xiaomi.eventreceiver would crash

[Xiaomi Account]
Optimization – Guide page style

[Security]
Fix – Incorrect system storage  in Cleaner – Advanced