mtk porting guide for begners

              PORTING GUIDE FOR MTK 64BIT 

Hello , Friends! 

I am pawan kumar from team porters.

I am also a beginner like you. I have searched many sites about how to port. finally I have ported my own roms. so I have decided to help new people who are new and having interested in porting with basic knowledge of flashing roms. so I  have made this guide so clear and easy with using simple terms and by picture representing. such that every user can understand and can port a rom by using this guide. and follow bug fixing guide along with this to fix bugs in your port rom.

Lets get started.

MAIN REQUIREMENTS :-

Base rom

Port rom

Mtk extractor / Calvik image kitchen

7zipper or win rar.

Note pad++

Meta-inf generator.


ADB Tool.

Brief explaination:-

BASE ROM?

It is nothing but your stock rom.

Ex: I own coolpad note3 lite. The rom of coolpad note3 lite is called base rom for me.

PORT ROM?

It is nothing but the one you want to port it to your device.

Ex: I want to port a rom from lenovo k4 note. That is port rom for me.

MTK EXTRATOR/ CALVIK IMAGE KITCHEN?

These are the tools which are helpful to unpack and repack boot.img or system.img files.
MTK EXTRATOR

IMAGE KITCHEN

7ZIP OR WINRAR?

This is a simple tool to zip and unzip files. Which is mainly useful to flash your custom rom. Or to unpack the port rom and base rom contents.
7zip

WIN RAR

NOTEPAD++?
It is very useful to edit scripts and build prop. Better than note pad.
downlod

META-INF generator?

If you dont know how to create updater scripts or your rom doesn’t contain meta-inf try this meta-inf generator.

download

ADB?

Adb is a command tool. Which is gives a lot of useful information. If your rom wont boot up then do this as given below

Open ADB

Give command :- adb shell logcat > log.txt

This command tells you where the error is. Or which file causing the error.

You can also use TWRP (Team Win Recovery Project) recovery to copy log.

After flashing your rom. Just go to ADB side load. Then click on copy log. Log will be copied to your external storage( i.e external storage or OTG) with the name of recovery.log open it using es explorer (or) note pad++

Note:-

1) This guide is only for same chipset versions like MT6735 to MT6735/53 or in a vice versa. This can be used to port mt67xz to mt67xz also.

2) Bugs in port rom will be transferred to base rom. So better choose a stable rom for porting.

3) You can only port same kernel versions. That means

           3.10.xz to 3.10.xz (lollipop based kernel to lollipop based kernals)

            3.18.xz to 3.18.xz (marshmallow based kernel to same)

                      Kernel is nothing but a computer programme which can have a control over the system.

4) My small advise:- if it is your first rom try with pure roms like aosp or cm based builds. Porting miui builds is considered as toughest and time taking thing.

Now lets get started with step wise procedure.

Step1:-

Create two new folders

i)             Base rom

ii)            Port rom

Place your base rom files inside base rom folder and your port rom files in port rom folder.( unzip your files using 7zipper r winrar)

Step 2:-

Always replace the port rom files with base rom files # keep this in mind #

Now open system folder go to etc folder

Replace these files

Replace firmware folder inside etc folder. And also replace the below files

  
    agps_profile_conf2
    media_codecs.xml

    apnconfig
    spnconfig

Step3:-

   Now go to lib and lib64 folders just replace these 7 files libaudiocomponentengine.so
libaudiocustparam.so
libnvram.so
libnvramagentclient.so
libnvram_platform.so
libnvram_sec.so
libcustom_nvram.so

And hw folder to fix hardware.

 

And also change these files one by one to fix boot loop which are like libcameramt67xz

And libcameracustom.lib

And libcamlgo.lib

Step4:- this is very important step and you have to pay your full concentration and attention towards this step.

Unpack boot.img of both roms.

Replace

Kernel.img

Go to ramdisk and replace

Int.mt67xz.rc

Fstabmt67xz

Now repack boot.img

Step5:-

Now replace the boot.img with edited boot.img

Step6:- now zip them and flash the rom.

To be a recovery flashable
Your ROM should atleast contain these things.
System
Meta-inf
Boot.img

and it must be in zip  format.rar or .archive wont flash

IF YOUR ROM DOESNT BOOT UP THEN FOLLOW ADB TOOL GIVEN ABOVE.

For fixing bugs follow the link given below.

        MTK Bug Fixing Guide including Cross Porting

                                      THANK YOU