[Q]Port kitkat to jelly bean device - Android Software/Hacking General [Developers Only]

Hello everyone! I'm using a device which is running 4.2.2 (mt6572/512MB of RAM/TFT 854x480 screen). Now i want to upgrade it to 4.4 kitkat so i try to port a 4.4 rom from CLONE DEVICES (mt6572/512MB of RAM too, but different about camera and some small things). I repack kitkat kernel (3.4.67) and stock ramdisk into a boot.img, then replace some file and folder in system/etc, lib, vendor, usr from stock to port. But it can't boot! After the logo appeared, my device stops booting (not brick, not bootloop, not power off). Anyone please tell me how to port4.4 kikat rom for jelly bean device! I saw someone get successfully! Thanks for reading and sorry about my bad English!

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[Q] Issues of 4.1 stock recovery with 4.2 ROM?

Hello guys.. I would be grateful if any of you could help me with your thoughts regarding this matter...
For security reasons I prefer flashing stock recovery and locking down the boot loader after I settle on a custom rom/kernel combo. Been doing this for a while and I dont mind building my phone up from the scratch when I change ROM.
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[Q] Screen stuck in Canvas logo (Booting Issue)!!!

Hi Developers,
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Kitkat-lolipop firmware base switcher for a6000

We all like to flash new custom roms in our Lenovo A6000.
Some time new custom rom release on Lolipop base which is very attractive and we might wanna check it out.
Unfortunately the new custom rom might be buggy and we may be forced to revert back to kitkat or whatever os you were before.
Analysing the present custom os' available for lenovo a6000, many rom authors says that the phone should be currently running on kitkat/lolipop before instaling that particular OS.
I found a work around to avoid flashing of 1 GB stock rom (which is time consuming) to get into kitkat/lolipop build. You just need to flash a very small sized zip file which contain the core system files that are essential .​Steps
From Kitkat to Lolipop
Download Kitkat named file attached below
Copy it to your sdcard
Boot into recovery
Flash the copied file
flash whatever lolipop custom rom you like
Voila all done and reboot
[*]From Lolipop to Kitkat
Download Lolipop named file attached below
Copy it to your sdcard
Boot into recovery
Flash the copied file
Flash whatever kitkat custom rom you like
Voila all done and reboot
Note: Not for Lenovo A6000 Plus
Status : Stable
Looks useful but I'm on A6000 plus. Can you port this for us?
zeon321 said:
Looks useful but I'm on A6000 plus. Can you port this for us?
Click to expand...
Click to collapse
Sure. i need the firmware-update files from kitkat and lolipop of a6000 plus. since i dont own the phone, hope someone can help me sending those files.
rahulsnair said:
Sure. i need the firmware-update files from kitkat and lolipop of a6000 plus. since i dont own the phone, hope someone can help me sending those files.
Click to expand...
Click to collapse
What files do you need? I can send you.
Thanks for the hard work. It helped a lot.
rahulsnair said:
We all like to flash new custom roms in our Lenovo A6000.
Some time new custom rom release on Lolipop base which is very attractive and we might wanna check it out.
Unfortunately the new custom rom might be buggy and we may be forced to revert back to kitkat or whatever os you were before.
Analysing the present custom os' available for lenovo a6000, many rom authors says that the phone should be currently running on kitkat/lolipop before instaling that particular OS.
I found a work around to avoid flashing of 1 GB stock rom (which is time consuming) to get into kitkat/lolipop build. You just need to flash a very small sized zip file which contain the core system files that are essential .​Steps
From Kitkat to Lolipop
Download Kitkat named file attached below
Copy it to your sdcard
Boot into recovery
Flash the copied file
flash whatever lolipop custom rom you like
Voila all done and reboot
[*]From Lolipop to Kitkat
Download Lolipop named file attached below
Copy it to your sdcard
Boot into recovery
Flash the copied file
Flash whatever kitkat custom rom you like
Voila all done and reboot
Note: Not for Lenovo A6000 Plus
Status : Stable
Click to expand...
Click to collapse
Thank You Rahul S Nair for Your Efforts and Hard Work,
Unfortunately It's not working for Me on A6000,
i was in CM 11 4.4.4 (Unofficial),
I just flashed your Kitkat based system by you.zip via TWRP and it's succesfully installed,
Then i flashed Xenon HD from ( http://www.techolaty.com/34356/lenovo-a6000-plus-xenon-hd-custom-rom-32-bit.html ) which is based on Lollipop 5.1, > it showed installation completed.
and i rebooted my device.
But Stucked on Lenovo Logo.
Waited for more than 5 - 6 Minutes, Done 3-4 Times, But no more Changes_Any remedy?
But after this i can install Kitkat based ROM, installed CM 11 again without any changes,
The Crew said:
Thank You Rahul S Nair for Your Efforts and Hard Work,
Unfortunately It's not working for Me on A6000,
i was in CM 11 4.4.4 (Unofficial),
I just flashed your Kitkat based system by you.zip via TWRP and it's succesfully installed,
Then i flashed Xenon HD from ( http://www.techolaty.com/34356/lenovo-a6000-plus-xenon-hd-custom-rom-32-bit.html ) which is based on Lollipop 5.1, > it showed installation completed.
and i rebooted my device.
But Stucked on Lenovo Logo.
Waited for more than 5 - 6 Minutes, Done 3-4 Times, But no more Changes_Any remedy?
But after this i can install Kitkat based ROM, installed CM 11 again without any changes,
Click to expand...
Click to collapse
You need to flash lolipop base system not kitkat.
Great @rahulsnair You saved time of installing stock kk and lp again and again if we want to change OS(lp and kk).Many users are not aware of this tool.It helped a lot .It works flawlessly.No brick found.
Thanks
Dude make it for a6000 plus...please
Excellent work ever..
Sir can you make flashable files for A6000+
Please I can send you any file to cross check.
Thanks in Advance
Need it for lenovo A6000 plus
rahulsnair said:
We all like to flash new custom roms in our Lenovo A6000.
Some time new custom rom release on Lolipop base which is very attractive and we might wanna check it out.
Unfortunately the new custom rom might be buggy and we may be forced to revert back to kitkat or whatever os you were before.
Analysing the present custom os' available for lenovo a6000, many rom authors says that the phone should be currently running on kitkat/lolipop before instaling that particular OS.
I found a work around to avoid flashing of 1 GB stock rom (which is time consuming) to get into kitkat/lolipop build. You just need to flash a very small sized zip file which contain the core system files that are essential .​Steps
From Kitkat to Lolipop
Download Kitkat named file attached below
Copy it to your sdcard
Boot into recovery
Flash the copied file
flash whatever lolipop custom rom you like
Voila all done and reboot
[*]From Lolipop to Kitkat
Download Lolipop named file attached below
Copy it to your sdcard
Boot into recovery
Flash the copied file
Flash whatever kitkat custom rom you like
Voila all done and reboot
Note: Not for Lenovo A6000 Plus
Status : Stable
Click to expand...
Click to collapse
Need it for Need it for lenovo A6000 plus
ilam android killer said:
Need it for Need it for lenovo A6000 plus
Click to expand...
Click to collapse
You have it he made it search threads a little bit better.
Here you go
http://forum.xda-developers.com/lenovo-a6000/how-to/firmware-base-switcher-a6000-plus-t3411914
not working .... i am on twrp 3.1.1.0 and i need to flash the KK base
error 7
not working
rahulsnair said:
we all like to flash new custom roms in our lenovo a6000.
Some time new custom rom release on lolipop base which is very attractive and we might wanna check it out.
Unfortunately the new custom rom might be buggy and we may be forced to revert back to kitkat or whatever os you were before.
Analysing the present custom os' available for lenovo a6000, many rom authors says that the phone should be currently running on kitkat/lolipop before instaling that particular os.
I found a work around to avoid flashing of 1 gb stock rom (which is time consuming) to get into kitkat/lolipop build. You just need to flash a very small sized zip file which contain the core system files that are essential .​steps
from kitkat to lolipop
download kitkat named file attached below
copy it to your sdcard
boot into recovery
flash the copied file
flash whatever lolipop custom rom you like
voila all done and reboot
[*]from lolipop to kitkat
download lolipop named file attached below
copy it to your sdcard
boot into recovery
flash the copied file
flash whatever kitkat custom rom you like
voila all done and reboot
note: not for lenovo a6000 plus
status : stable
Click to expand...
Click to collapse
the instructions are other way around buddy. You should check it.

how to port downgrade kitkat os to jellybean os

i try to downgrade my kitkat rom to jellybean rom but is stuck in bootlogo, i try to port the boot.img of jellybean i replace the kernel and kernel head but still stuck in bootlogo, i replace the init.rc, then my phone are looping in bootlogo, my custom recovery is cwm, i succes to port the cwm of jellybean work to my kitkat os, my problem i like to be jellybean my rom
Please everyone do you know how to downgrade
my reason why i like to jellybean? because i like to try all custom rom of jellybean

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