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Porting firmware from device to device with MT657x processor

Necessary and useful

CWM Recovery Firmware Guide
Assistance in the development and porting of Android OS on MTK devices with a 2sim radio module
Nuances of porting firmware
What binaries and libraries are responsible for what
MIUI universal version for the platform MT6575
MIUI universal version for the platform MT6577
Program for porting firmware
Troubleshooting porting Android 4.2.2 on MT6577

You can not port the firmware, for example from MT6575 to MT6577. Both the base and stock firmware must be for one processor.
Both firmware must be the same OS version

Shoveled a bunch of sites and forums in search of normal instructions for porting firmware from MT6577 to MT6577, I found one very brief and working instruction. I myself managed to get the firmware from one device to another. For others, the instruction when downloading the firmware is on the logo.
User wrote the instructionsback37from the forumhttp://forum.china-iphone.ru.
Here is the topicwhere i got the instructions from. In it you will find a lot of useful information needed not only for MediaTek processors, but also for others.
Created a thread onsavagemessiahzine.comto make it easier to find instructions (I personally searched for a very long time). The instruction was a little paraphrased, but the essence is the same.

Actually the instruction itself:

First step

We take a working firmware for your device (BASE);
We take the ported firmware for custom recovery (PORT).

Second step

ATPORTWith replacement, we drop folders fromBASE :
/ system / vendor
/ system / lib / hw
/ system / lib / modules

and files
/system/etc/vold.fstab
/system/etc/vold.fstab.nand
system / usr / keylayout / generic.kl
boot.img

Third step

Go to META-INF / com / google / androidPORT , open updater-script.
If there are lines:

assert (getprop ("ro.product.device") == "Smartphone" ||
getprop ("ro.product.board") == "Smartphone" ||

Remove them.

If there are no rows

assert (package_extract_file ("boot.img", "/tmp/boot.img"),
write_raw_image ("/ tmp / boot.img", "bootimg"),
delete ("/ tmp / boot.img"));

append them to the end of the script.

Fourth step

The firmware will be in the folderPORT . Now all this needs to be packed with normal compression in zip (If you unpacked). And sure subscribe .

Fifth step

We are stitching. If it hangs on the logo for more than 10 minutes, it will not load. You need to edit boot.img, namely, unpack both boot and drop the folderrmdiskofPORT at BASE with replacement. Unpack / Pack boot.img can this program . The resulting boot (if the name is new_image.img, rename it to boot.img) is inserted into the archive with the firmware and signed again.

Addition

If something does not work in your firmware after porting, it’s not a fact that it will work after the manipulations given below. But it’s worth a try: yes2:.
HereIt is written which binaries and libraries are responsible for the operation of different modules (GPS, Bluetooth, Wi-Fi, radio, etc.) Try replacing them too.

*OfBASE at PORT

GSM does not work, 3G - change folder/ system / etc / firmware
Wi-Fi does not work - change files/ system / bin / p2p_supplicant; / system / bin / wpa_supplicant
The camera does not work - we change/system/lib/libcameracustom.so
Problems with sound - we change/system/lib/libaudiosetting.so
The radio does not work - we replacesystem / lib / libaudiosetting.soandlibfmcust.so
Heard wheezing / sound artifacts are replacingsystem / lib / soundfx
Do not work the hardware keys change the foldersystem / usr / keylayout

*Solving some problems (addition)

It does not catch the connection-from the system / etc / firmware folder, we take out modem.img, if after that the network does not work, then we take files from the system / lib / modules folderccci.ko, ccci_plat.ko

The problem with the home key does not work as intended - from the system / usr / keylayout folder we take the fileGeneric.klandmtk-tpd.kl

Wi fi-does not work from the system / lib / modules / folder.mtk_stp_wmt.koandmtk_wmt_wifi.kothen go to META-INF / com / google / android / updater-script looking for symlink symlink (“/ system / lib / modules / wlan_mt6620.ko and changing the value to 6628 if you have such a chip, if you don’t know what , go to the base and in build.prop we search in the wlan line

If there are problems with bluetooth, then we take a file from the folder.system / lib / modules / mtk_stp_bt.koif not working then change these two filessystem / lib / libbluetooth_mtk.so
system / lib / libbluetoothem_mtk.so

Radio does not work - we changesystem / lib / modules / mtk_fm_priv.koandsystem / lib / modules / mtk_fm_drv.koif does not work, then we change these files
system / lib / libfmar1000.so
system / lib / libfmcust.so
system / lib / libfmjni.so
system / lib / libfmmt6616.so
system / lib / libfmmt6620.so
system / lib / libfmmt6626.so
system / lib / libfmmt6628.so
If, however, does not work changeFMradio.apk

The camera does not work with the system / lib / hw / folder; change this file camera.default.so; if it does not help, then with the system / lib folder we change:
- libcamalgo.so
libcamera_client.so
libcameracustom.so
libcameraprofile.so
libcameraservice.so
video does not work change these fileslibmhalandlibMTKOmxin the system / lib folder

The problem with GPS is changing these files.system / xbin / libmnlpandmnld

Black screen, slow animation, slow auto-rotate-change this filehwcomposer.mt6577.soin the system / lib / hw folder -commentby Andrey567

The compass, the proximity sensor or something from this opera does not work, we changesystem / lib / hw / sensors.default.so

Brief instructions (not universal) for porting 4.2.2 to 6577 devices.

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Post has been editedvaalf - 13.05.18, 19:08

[skorpion720]

Alex_8324, Porting firmware to MTK6580 / MTK8321
Contact here.

[VBobrov12]

Good day everyone. There is a ViewSonis ViewPad 7D MTK 6577 tablet, there is a native firmware for Android 4.0.4 and there is firmware for the same tablet only the 7D Pro MTK 6582 model and android on this firmware 4.2.2. I would like to transfer 4.2.2 to MTK 6577, the parameters of the tablets are the same, only different processors, tell me if it is possible to do it and how to do it?

Post has been editedVBobrov12 - 14.12.18, 15:35

[Zormax]

VBobrov12,
not

[VBobrov12]

And how can I install Android 4.2.2 on this tablet or will it be impossible?

[iliabutor]

Guys i did by thispatternAnd I can not. Restore the internal SD (6577,3.0.13,4.0.4, mini 3.2.22)

Attached images

Post has been editediliabutor - 19.01.19, 09:51

[ibmtop]

Hello, someone saw the phone at 6577 with 5 buckets on board?

[Aliana_Basil]

ibmtopAt the nidrome, I found 2 android 4.4.x firmware. There is no higher. Hardly will. But, in principle, it is possible to collect 5 buckets from refills (if any) and 5 buckets from refills to collect 5 buckets. Maybe not even the fifth bucket, but 6 ...