Database Users

[HELP] can somebody extract this boot.img please

hi,
i have a big problem.
i have extracted with perl script the boot.img from updata.app
this works fine... but when i want to extract the boot.img, then i have many errors and the .gz files are not readable.
i have tried it under windows and ubuntu, but still the same :-(
can somebody extract the file ?
here is the .img file
http://www.megaupload.com/?d=XX69Z7BM
many thanks

That img file is corrupt, or does not have a ramdisk image within it (only a kernel). Or it is using some non-standard means to store the ramdisk.
What is it from and how did you extract it?

thanks for your replay
the file is from a v845 (huawei 8120).
Firmware: V845 V100R001MYSC02B 236(Malaysia)
from here: huawei

i used the script split_updata.pl, split_bootimg.pl and unyaffs.exe

the boot.img doesn't use yaffs2, it is a raw kernel image combined with a cpio archive of the ramdisk image (and a short header to tell where the files are delimited). Your file has a corrupt header. I was able to extract it for you. Do you want me to attach it for you? I assume you extracted the kernel OK (it worked for me).

Gene Poole said:
the boot.img doesn't use yaffs2, it is a raw kernel image combined with a cpio archive of the ramdisk image (and a short header to tell where the files are delimited). Your file has a corrupt header. I was able to extract it for you. Do you want me to attach it for you? I assume you extracted the kernel OK (it worked for me).
Click to expand...
Click to collapse
yes, please attach it
can you tell me, with which tools you managed to extract the kernel ?
thanks

wildgunman said:
yes, please attach it
can you tell me, with which tools you managed to extract the kernel ?
thanks
Click to expand...
Click to collapse
I normally use the tools found in this thread:
http://forum.xda-developers.com/showthread.php?t=551711
but like I said, your image was corrupt or something. I just hex grepped it for a gzip signature indicating the start of the gzipped cpio ramdisk portion.

Make flashable zip from zImage

Hello i have compiled stock kernel from lg sources and created the zImage file in arch/arm/boot folder using 4.6 google toolchain.I want to know how to make it flashable as zip file.I have tried anykernel tool without success :/ Any help appreciated!

How to add init.d on stock rom - kernel?

hi i want to ask how i can add init.d on stock rom - kernel i am on xxuhob8 and in stock kernel i found a small soft to unpack repack the kernel.
i just did the run.bat a menu to use it quickly.
https://www.dropbox.com/s/ssk4th4biry0hkr/bootimg-pack-unpack.rar?dl=0
also in the file is my kernel backed up with twrp and renamed from boot.emmc.win to boot.img if anyone can make it is welcome.
also found uni init.d http://forum.xda-developers.com/showthread.php?t=1933849&page=51
and a mess how to .... http://forum.xda-developers.com/showthread.php?t=2287540 and http://forum.xda-developers.com/showthread.php?t=1610741
can some one help?
thanks in advance

extraction of kernel form rom installation file

Hi,
Do you know how to extract kernel from installation file of rom and make flashable (in TWRP) zip kernel file ?
I need extract ant make flashable kernel file from [ROM][AQF5][6.0.1][G900x]SkiesROM UX v3.1 A7 2017
I will be grateful for your help

tomaasz said:
Hi,
Do you know how to extract kernel from installation file of rom and make flashable (in TWRP) zip kernel file ?
I need extract ant make flashable kernel file from [ROM][AQF5][6.0.1][G900x]SkiesROM UX v3.1 A7 2017
I will be grateful for your help
Click to expand...
Click to collapse
Hi,
Sorry for the delayed reply.
Can you be little more specific? Do you want to 1) extract the kernel (that is an "zImage") image or 2) simply the "boot.img"?
The second task is simple as you can simply copy the "boot.img" from the ROM zip. You can flash "boot.img" directly via twrp (no need to make flashable zip).
The first task, however, is bit complicated as it requires the use of some tools like mkbootimg or Android Image Kitchen to split the "boot.img". You can flash the obtained "zImage" by simply copying that into an existing anykernel based klte custom kernel. :laugh:
Feel free to contact me for any further clarification/help.

Hi,
Thanks for your answer. I needed flashable zip kernel file extracted from SkiesRom.
I wanted patch this by DualBoot

tomaasz said:
Hi,
Thanks for your answer. I needed flashable zip kernel file extracted from SkiesRom.
I wanted patch this by DualBoot
Click to expand...
Click to collapse
Hi, if you have a Linux, you can easily extract the zImage from the "boot.img" using mkbootimg (see previous comment for links). If you want me to do that job, feel free to send the "boot.img" of that mentioned ROM (I'll make a flashable anykernel zip file for you so that you can flash over any ROM).
Regarding the DualBoot, I really do not know...

How can i unpack boot.img?

I want to custom kernel without magisk.
So i tried to unpack boot.img in order to modify kernel in boot.img.
But, i couldn't unpack boot.img with any other unpack tool like Android image kitchen.
Common problem is about ramdisk.
i guess common unpack tools can't unpack pie 9.0 boot.img.
so i used different ways flashing other rom's boot.img because of using recent custom kernel. However, it is just temporary action.
do you know any other ways to unpack boot.img?

Letmeseeforest said:
I want to custom kernel without magisk.
So i tried to unpack boot.img in order to modify kernel in boot.img.
But, i couldn't unpack boot.img with any other unpack tool like Android image kitchen.
Common problem is about ramdisk.
i guess common unpack tools can't unpack pie 9.0 boot.img.
so i used different ways flashing other rom's boot.img because of using recent custom kernel. However, it is just temporary action.
do you know any other ways to unpack boot.img?
Click to expand...
Click to collapse
You can unpack any boot image if you have the right tools. If the problem is with unpacking the ramdisk, that would be because you are trying to use the wrong tool to decompress it. Open the ramdisk image with an hex editor, and post the values of the first 4 bytes. And then tell us which tool you are trying to use to decompress it.

Why ramdisk is empty?
Bro I have redmi note 7 pro
when I unpack boot.IMG , ramdisk folder is always empty
Why ?
is there something that I missing?