Help my recover my lenovo s650 to official rom

Question

plz help me i have lenovo s650 i formated it and lost my imei
and i installed a rooted rom "vibeui_v2.0_1439_7.3.1_st_s650_baralajbi " .
i need to unroot my device and return back to official rom with my imei because every time i make factory reset
i must use android mtk to recover my imei .
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Answer 1

Hi wensh
Glad I could help.
 i did what u said and i installed kitkat rom
I just ''presented'' the official firmware options 
can i write imei without root
You can try this(can't guarantee 100% that it will work but it's worth a try)->
Install THIS (ALTERNATIVE LINK  to the app)and follow the instructions from HERE
Open --> Engineer Mode --> Engineer Mode (MTK) -->Connectivity Tab -->CDS Information -->Radio Information
- select Phone 1
- you can see AT+ at the top
- type AT+EGMR=1,7,"xxxxxxxxxxxxxxx"(x=your 15-digit FIRST IMEI)
- press "SEND AT COMMAND"
- reboot your phone
For the second IMEI
- select Phone 2
- type AT+EGMR=1,10,"xxxxxxxxxxxxxxx"(x=your 15-digit SECOND IMEI)
*If you get ''this command is not allowed in userbuild'' or similar message->
Put a space between AT and +  Should look like this->AT +EGMR=1,7,”(your 15-digit FIRST IMEI)”
Same goes for the second IMEI AT +EGMR=1,10,"xxxxxxxxxxxxxxx"(x=your 15-digit SECOND IMEI)
AT + instead of AT+
- reboot your phone
*#06# to check IMEI
If you want to use the app's other ''settings'' you do require root access.
You can use THIS APP to root your device,(download to your phone->allow unknown sources in Settings->Security->install).
The above IMEI restore method is generally risk free.
As you probably already discovered(you can do a search on ''restore'',''replace'' or ''rewrite IMEI on MTK'') there are other methods to repair your IMEI.
Some methods do involve risks.Use at own risk.
Also please keep in mind that in many countries changing/replacing the IMEI number/s is illegal.
Hope this helps.
Regards.
PS.You can also use the QR codes I made to download the apps
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