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Discussion (in English);

Current firmware currenthere
Miuipro firmware: Support for ZTE Z7 Mini / Max devices is stopped, the firmware from the project site is deleted.
Firmware from miui.su: not recommended to install, because Contain errors and a number of flaws.download page.

In the firmware MIUI, a super user is already built into the SuperSU separately, it is not necessary to put SuperSU. This can lead to unstable system operation. SUPPORTING SUPPORT COMMUNICATIONS Are safety on the way (label on the desktop) - permissions - root access. Miui V6 changed the principle of operation root. It is turned on by default (on stable - off, but they do not leave our device). The first program must request root, i.e. First you need to start the program or perform an action that requires root access (accordingly will receive a refusal for the first time). And after that, already in security-resolution-root access, it will be possible to give root access to the program (or not to give).

WSM is a complete analogue XPosed for MIUI firmware. When working with WSM, it is necessary to remember that this project was originally created to work with MIUI V5. Use WSM on MIUI V6 is needed with caution. Many WSM modules work incorrectly on MIUI V6, which may cause frequent hangs and rebuts.

MIUI in moderation "Disturbed" in terms of energy consumption. It must be remembered that immediately after installing the firmware, an increased energy consumption is observed. This may be associated with synchronization with Xiaomi Cloud, with data caching, etc.
If it seems to you that in the process of operation, the "JOR" of the battery is observed, then you should preferably install the WakeLock Detector program (available on the forum), which will show the reasons for not falling asleep.
Processes that do not give to sleep may be:
1. Xiaomi services, gallery - you must wait for the end of synchronization, or cancel it. If you do not use them at all, these services can be freezed / deleted.
2. BaiduNetworkLocation.apk (may be marked as a pair of hieroglyphs) - you can safely remove it from the System / App folder (you need root)
3. Process 1013 - in the WLD Theme write that this process is responsible for system sounds (taps on the screen, unlocking, etc.). Alternatively disable these sounds. Or search solutions in WLD theme
4. Media or MediaScanNerserVice - either give this service everything to flashes, or throw.
Or usethisinstruction.

To correctly and in time came push notifications from the application, it is necessary to add this program to autoload (security - permissions - autorun). Additionally, you can block the unloading of this application from the memory. To do this, call "recent applications" (by default, by pressing the menu button; previously invoked the HOME button) and pull the application icon down and release (the icon appeared on the application icon says that this application will not be unloaded from the memory when the wiring)

In MIUI V6, the principle of operation of the notification panel has been redesigned. By default, the standing application icons are not displayed in the status bar, only system events are displayed: Do not disturb, synchronization, GPS search, etc. You can enable icons display in "Settings - Notifications Panel - Notification Icons". At the same time, the application icon will be displayed.

Xposed for MIUI V7
WSM for MIUI V7 (discussion on en.miui.com)
WSM for MIUI V7 (discussion onsavagemessiahzine.com)
MIUI Tweaks [Xposed]