Ok guys, hope it will be helpful for every mstar s700 owner.
1) Please download the drivers/extract them and install via ''computers device manager''. Because it is not an .exe file, so please plug your device to your pc by your usb cable and wait a bit. It will install some drivers by windows but 1 driver wont. So please go to device manager, find the problematic(yellow marked or question marked) line and update the driver by ''browse from my computer'' option and find your extracted drivers file. This is for the users who havent installed the drivers yet. If you did already, skip this step.
Download the drivers from
THIS LINK
2) Download the rom from
THIS LINK
Extract it somewhere you can find easily later.
3) Download the SP FLASH TOOLS from
THIS LINK
Extract it somewhere you can find easily later.
4) Please go to settings/phone information and write your imei numbers somewhere down. Because after flashing rom, You will lose these information. No worries, it is easy to recover. You can find your imei numbers also under the battery or on your retail product box. Remember also flashing this rom will erase your all other data, so please back them up.
5) Please turn the phone off, remove the battery, your sim card(s) and sdcard.
6) Now run flash_tool.exe from SP FLASHTOOL folder, it may first time give an error since the android scatter file not attached yet. Pretty normal. Ignore it and go on.
Now click *scatter loading* icon from the right(a yellow file icon) and browse your ROM FILE and pick the *android scatter file (a .txt file)*. The program now will list some lines colored green and white. You will also see a little above-left side, an aroma menu that give you a few options, and here you must pick
*FORMAT ALL + DOWNLOAD*
Just like
this example screenshot and for last, please CLICK the DOWNLOAD ICON (with green arrow) that placed on the very top.
7) This is the time you need to plug your phone to the PC. Remember that the battery must be removed.
When you do this, SP FLASH TOOL will start firstly formating the partitions, create a full 12,5 gb partition and then start flashing the firmware for your phone. You will see all these happening with an indicating bar placed on the down part of the software. Once it is completed, you will see a smilar screen
LIKE THIS
8) Now quit from the sp flash tool, and also unplug the phone from pc. Place your sim card(s), sd card and battery back and turn the phone on. The first boot may be a bit long that is very normal.
9) This is the part about how to recover your imei data back. When you turn the phone on, you will see a notification saying INVALID IMEI on the system bar. Now please follow these steps :
1. Go to Engineering Mode with this code * # * # 3646633 # * # *
Please type this code above, call pad
2. Engineering Mode will be shown on your phone screen
3. Go to Connectivity and then CDS information
4. Go to Radio information
5. then go to Phone1 (For the first IMEI No)
6. At the top there is a command line which begins "AT+" just type there "AT +EGMR=1,7,"IMEI_1" (Instead of IMEI_1 put your first IMEI No) (
Please see the ''space'' between ''AT'' and ''+'')
7. Hit send command
8. If you done, do the same steps for IMEI_2
9. Please go back from that screen and select "Phone2"
10. And enter the code "AT +EGMR=1,10,"IMEI_2" (Instead of IMEI_2 put your second IMEI No) (
Please see the ''space'' between ''AT'' and ''+'')
11. Hit send command
12. Reboot your phone. You will see, your network and imeis will be back
A new interface will welcome you.. Cos it is based on 5.1 lolipop. Icons, launcher and some apps, wallpapers etc have been changed. All bloatware gone and apps have been deodexed. It is prerooted by supersu and also custom CWM recovery

The battery drain and deep sleep issues have been solved and has a better battery consumption. Some usefull apps have been added. init.d support and build.prop optimizations have been added as well.. Overall it is a good and fast rom IMO. I havrnt found a bug yet.. But your experiences may varry and opinions can be more different of course..
I would like to mention again, this is not my rom.. But it is my invention by mixing some roms together.. Bypassing the issues etc. I would like to thank to the rom owner again and again.. Hope the tutorial will help you to at least test the rom and share your experiences. Please hit the THANKS button if you think i have helped you..
regards