CM 12.1

original discussion (in italian):http://www.androidiani.com/forum/zte-nubia-z7/472442-rom-z7max-android-5-1-1-cm-12-1-unofficial.html
in english: http://www.androidiani.com/forum/international-users-help/474427-rom-zte-z7max-android-5-1-1-cm-12-1-unofficial.html

Hi all, after a long time I came back with a new rom

it is a (multilanguage) CM12.1 Lollipop 5.1.1 entirely compiled by me, still it as some problems but is already usable

ONLY FOR MERGED PARTITION

what's working:
camera
flash led/torch
gps
wifi
dual sim
sensors
nfc (maybe)
Bluetooth
led notification/charger
FM Radio
Infrared​​

what's not working:
let me know

changelog:

16/12/2015 Release V19 (MD5:5afe185865b962b5500f0280b5ccb04e)

• added support for the smart cover 
  to manage the cover I used an app created for the HTC dotcase (thanks to the author), adapting it to our device
  the cover is disabled by default and for the moment there is no option to enable/disable it. if you want to enable just flash the file (without any wipe) CM_EnableCover.zip (if you have it enabled and want to disable just flash the file CM_DisableCover.zip)
• kernel: added support for dotcase
• Security patch December 2015
• proprietary blobs updated from latest stock firmware 3.68
• sync cyanogen source code (16/12/2015)

16/11/2015 Release V18
-Including the latest Google security fixes of November
-updated proprietary file (blobs) from latest stock firmware 3.65
-sync cyanogen source code (16/11/2015)

26/10/2015 Release V17
-sync cyanogen source code (26/10/2015)

08/10/2015 Release V16
-source code updated to Build ID LMY48W (5.1.1_r24) (from LVY48F 5.1.1_r18)
-Including the latest Google security fixes of October 5
-updated proprietary file (blobs) from last stock firmware 3.61
-updated baseband ver 3.61 (it can be downloaded here, flash without wipe)
-sync cyanogen source code (08/10/2015)

26/09/2015 Release V15
-kernel: fix phone reboot when using usb or bluetooth mouse/keyboard 
-updated proprietary file (blobs) from last stock firmware 3.60
-updated baseband ver 3.60 (it can be downloaded here, flash without wipe)
-some optimizations
-sync cyanogen source code (26/09/2015)

21/09/2015 Release V14

-Fix bug deleting photo in the gallery
-updated proprietary file (blobs) from last stock firmware 3.59
-updated baseband ver 3.59 (it can be downloaded here, flash without wipe)
-some optimizations
-sync cyanogen source code (21/09/2015)

18/09/2015 Release V13
-Fix V12 bootloop bug
-kernel: updated with the latest codeaurora patches
-fix for some selinux policy
-some optimizations
-sync cyanogen source code (18/09/2015)

15/09/2015 Release V12
-do not use, bootloop problem (link removed)
-updated app Nubia IRControl vers. 3.0.1.1011
-kernel: added some patch to wifi driver prima/pronto
-updated proprietary file (blobs) from last stock firmware 3.57
-updated baseband ver 3.57 (it can be downloaded here, flash without wipe)
-some optimizations
-sync cyanogen source code (15/09/2015)

06/09/2015 Release V11

-updated proprietary file (blobs) from last stock firmware 3.56
-updated baseband ver 3.56 (it can be downloaded here, flash without wipe)
-some optimizations
-sync cyanogen source code

29/08/2015 Release V10

-updated proprietary file (blobs) from last stock firmware 3.55
-updated baseband ver 3.55 (it can be downloaded here, flash without wipe)
-some optimizations
-sync cyanogen source code

25/08/2015 Release V9

-fix camera bug (from release V8)
-liblight: fix bug Home led always on when the navigation bar is active and charging phone
-Doubled the incall volume step (from 5 to 10)
-updated proprietary file (blobs) from last stock firmware 3.54
-updated baseband ver 3.54 (it can be downloaded here, flash without wipe)
-optimization and various modifications
-sync cyanogen source code

21/08/2015 Release V8

-bug: there is a little bug in setting preferred network type, after change all the options become gray and no longer be selected…simply go back and re-enter
-Added screenshot tile in quicksetting
-Doubled the volume step (from 7 to 14 for all volumes and 15 to 30 for the multimedia volume)
-liblight: fixed the random Home led lit up brighter than normal
-updated proprietary file (blobs) from last stock firmware 3.53
-updated baseband ver 3.53 (it can be downloaded here, flash without wipe)
-optimization and various modifications
-sync cyanogen source code

18/08/2015 Release V7

12/08/2015 Release V6

-Fix setting Preferred Network type (again)
-Added option for show/hide headset icon in Settings->Status Bar
-Added option for show/hide key navigation bar in Settings->Buttons (physical keys stay active)
-kernel: set to default intelliactive governor (instead of interactive)
-kernel: set to default westwood TCP congestion control (instead of cubic)
-optimization and various modifications
-sync cyanogen source code

07/08/2015 Release V5

-fix touch bug synaptics touchscreen
-fix recording call
-kernel: update to 3.4.108 version
-kernel: added several selinux patch
-kernel: added and updated zram support (from kernel 3.10, disabled by default…can be enable with trickster mod or similar app)
-kernel: added lz4 support
-kernel: added exfat filesystem support (for external sdcard and usb key)
-kernel: updated wifi driver
-optimization and various modifications
-sync cyanogen source code

02/08/2015 Release V4

-Added option for adjusting intensity vibration in Settings->Sounds
-Possible fix for LED Home button that occasionally lit up brighter than normal (to be tested better)
-kernel: few optimizations
-kernel: compiled with linaro toolchain 4.9 optimized for arm a15
-optimization and various modifications
-sync cyanogen source code 

26/07/2015 Release V3

-Fix wrong MAC Address
-Added a option to show/hide the statusbar root icon (#) (in settings->Status Bar)
-Added a option to show/hide exclamation mark on signal strength icons when there is no Internet connection (settings->Status Bar, this change is not in real time…to force the icons upate just enable/disable wifi or enable/disable airplane mode or simply reboot your phone)
-optimization and various modifications
-sync cyanogen source code (finally has been added the option for enable/disable the data connection in settings->SIM cards)

22/07/2015 Release V2

-Fix setting Preferred Network type
-Added network speed indicator in statusbar (can be enabled in settings->Status Bar)
-Implemented 3 battery mode profiles (in settings->battery):

• balanced: governor interactive, freq min 300Mhz – max 2.45Ghz, GPU max 578Mhz (the default profile)
• power save: governor conservative, freq min 300Mhz – max 1.57Ghz, GPU max 389Mhz
• performance: governor performance, freq min and max 2.45Ghz, GPU 578Mhz

-some optimizations and changes
-sync cyanogen source code

19/07/2015 Release V1

-optimized source code (liblight) led keys (now it is almost perfect)
-kayhandler added to manage the double tap to wake (I hope in some way help to fix the SOD bug)
-added app IR stock Nubia translated into Italian, Russian, English and Chinese
-reinserted the option "prevent accidental wake-up" removed by mistake in the beta3
-fix saving settings LTE/3G/2G
-changes in various configurations and optimizations
-sync cyanogen source code

16/07/2015 beta 3

-fix led lights on menù and back button (sometimes one button still light on…I'm working on it)
-add native multiuser support
-disabled USB Mass storage connection (useless with emulated sd)
-fix USB charging option
-probable fix for mic in google search (need more tests, needed the new gapps that I have uploaded on mega tk_gapps-modular-nano-5.1.1-20150705-signed.zip)
-fix setting LTE/3G/2G (for the moment is only a partial fix, after a reboot the setting return back to default value)
-updated proprietary file (blobs) with last firmware stock 3.22
-sync cyanogen source

14/07/2015 beta 2
fix thermal engine: increased performance (antutu score 43000~)
status bar: fix show percentage next to the battery icon​
sync cyanogen source code

11/07/2015 beta 1
added double tap to wake feature (can be enable in settings->display)
fix restart/shutdown crash
fixed an issue that sometimes the gps stopped working
enabled some compile flag for optimization
sync cyanogen source code

08/07/2015 alpha3
kernel:​ some tweaks
kernel: added some governor cpu
kernel: added some scheduler
kernel: added cpu voltage table
kernel: added LCD color calibration
(all kernel settings are configurable via Trickster Mod or similar app)
fix FM Radio​​​​​
fix Infrared​

06/07/2015 alpha2
first public release

ONLY FOR MERGED PARTITION

flash instruction:
first of all: backup all with twrp recovery
download rom and gapps
full wipe
flash rom and gapps
reboot

The first boot takes a bit 'of time

Root access can be enabled in developers options