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system.img from ROM zip files?

Hi,
I was wondering if there was a way to convert .zip files of ROMs/themes into system.img files so that they can be booted up via the android sdk emulator?
I've seen that it's possible to launch system.img files in the sdk emulator, but after searching for quite some time I wasn't able to pinpoint a method for creating system.img from update-cm-4.2.12.2-signed.zip (for example).
Thanks.
DT

i made a post about those system.img files earlier here: http://forum.xda-developers.com/showthread.php?t=609090
in theory it's possible using the mkfs.yaffs2 tool, but i'm not sure whether the emulator supports danger SPL roms, because the system image file size is limited in the emulator as well...
http://www.dotphone.org/attachment.php?aid=6
it's the mkfs.yaffs2 tool
see usage here:
http://www.dotphone.org/viewthread.php?tid=32

Hi,
Thanks for the link, but I'm quite a newbie in these things, so could someone please walk me through process? I've downloaded the archive in the link.
How many times do I unzip it (I can unzip it up to three times and then I get 5 files numbered 1 through 5)? Where do I paste it? How do I use it? The explanation in the other thread was slightly too complicated for me sorry
Thanks
DT

/push
Anyone willing to help out a newbie?

bump
I am looking to do the same thing

Get someone to Nandroid backup the ROM.
It creates a system.img, recovery.img, data.img, cache.img and boot.img.
Not the easiest method but it works

Combine Sapphire ROM file to a single update file?

@All,
My question is very simple I believe.
The latest RUU release for Sapphire/Magic contains after extraction 2 zip files as follows:
rom.zip
This contains the following files:
android-info.txt
boot.img
recovery.img
spalsh_HTC_Magig.nb0
system.img
userdata.img
rom1.zip
This contains the following files:
boot_special.img
hboot_7200A.nb0
radio.img
Is it possible somehow to combine the above 2 ROM files so that the device can be flashed with one single sappimg.zip file?
I tried combine all above files into one single zip archive, but flashing does not start. maybe I have overlooked something somewhere, or special attention have to be given to some config file or something have to be added maybe?
I do not want to flash via RUU package, only via card method. Any suggestions as to how the above can be done?
Regards

Need INU India gt-9500 original MEA sys file

Can anybody provide me with the original sysytemui file found in system/apps as I have replaced with the modified without the backup and it is continuosly showing the message that sysui has stopped
Plz

If nobody provides the single systemui.apk you can try to extract it from original firmware by using [WINDOWS][TOOL]Android ICS JB EXT4 ImageFile Unpacker!!! http://forum.xda-developers.com/showthread.php?t=1921399
Make a copy from your extracted i9500MEA firmware and rename .tar.md5 into zip.
Then extract system.img.ext4 an unpack with above-mentioned tool.

AiMwasNeD said:
If nobody provides the single systemui.apk you can try to extract it from original firmware by using [WINDOWS][TOOL]Android ICS JB EXT4 ImageFile Unpacker!!! http://forum.xda-developers.com/showthread.php?t=1921399
Make a copy from your extracted i9500MEA firmware and rename .tar.md5 into zip.
Then extract system.img.ext4 an unpack with above-mentioned tool.
Click to expand...
Click to collapse
Thanks but it would be so easy if somebody kind enough to provide me with the default file

Thanks downloaded the whole new firmware

Question about creating TWRP flashable file

Hey all, I've looked all over an can't find the answer to this... I have a NAND backup I made using TWRP, however, I had the problem many have had with getting errors when trying to restore it. So I thought I'd try a different way by creating a TWRP flashable file from the NAND files. I have taken the files from the backup and extracted them using CYGWIN. I read a thread here:
https://forum.xda-developers.com/showthread.php?t=2746044
But I'm stuck on a couple of things... First, the part about using the META-INF folder from another ROM... I've checked the files in in the META-INF folder and notice that the updater-script is what loads the files and directories. But none of the META-INF files I have found matches my backup files.
The files I want to flash are the complete system folder, complete data folder and the boot.img file. Is it possibly to flash these with TWRP without the META-INF folder/files? If I have to use the META-INF how do I make sure all the files and folders are flashed?
Would it be better to create an ODIN flashable file and just use Odin to do the flash? If so should I put the system and data folders into one file and then use the boot.img (or would I put the boot.img finle into a tar) in the Bootloader spot in Odin?
Thanks in advance.

[Discussion][ZE552KL] How could I extract just the firmware update of the .zip file ?

Hi,
So I'm actually running LineageOS 16, and I wish to keep it simple and just make the necessary firmware update (for security reasons). I wanted to directly attach the zip file with the correct SKU but the file is too large. And I suppose it can apply for any of Asus' manual update, so.
Here is the link : https://www.asus.com/Phone/ZenFone-3-ZE552KL/HelpDesk_Download/
Could I extract the Firmware-update folder from the zip (I reckon it is the one thing I need, in my case) and somehow make an update out of it? I'm not too sure about how to do that, since Asus make it complicated in my opinion.
Thanks for your collaboration!