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Question about modifying signed Rom zip files

Can I modify an existing one by simply dropping in updated bootscreen files, rosie.apk, etc.. and signing the existing rom zip?
Any good guides on how to do one if not, and/or how to use Flipz kitchen tool to create a rom?
Ceger

I am pretty sure if you sign the file and you modify it after that you will have to resign it. At least thats how it goes for other things that are similar that I deal with.

Kcarpenter said:
I am pretty sure if you sign the file and you modify it after that you will have to resign it. At least thats how it goes for other things that are similar that I deal with.
Click to expand...
Click to collapse
I understand that, just wondering if I can add new files and they will move or does some master script need to be updated to know to move the files. In other words, is it done by directory or by file?
For example, if I add some apps to /data/app in the zip will they be there on the phone when I install the ROM zip, etc.. More specifically, I have added an alternate boot sequence. The rom does not have a boot1.gif. If I add the new sequence with XML, will the boot1.gif be installed as well or do I need to update something that directs the install of the ROM to move that file or is it automatic as the folder is moved over?
Ceger

Ceger said:
I understand that, just wondering if I can add new files and they will move or does some master script need to be updated to know to move the files. In other words, is it done by directory or by file?
For example, if I add some apps to /data/app in the zip will they be there on the phone when I install the ROM zip, etc.. More specifically, I have added an alternate boot sequence. The rom does not have a boot1.gif. If I add the new sequence with XML, will the boot1.gif be installed as well or do I need to update something that directs the install of the ROM to move that file or is it automatic as the folder is moved over?
Ceger
Click to expand...
Click to collapse
I have found that the easiest thing to do is just put the files that you want to use to replace the old ones into a signed zip and then flash just those files I have tried altering a rom file with no success

wtphoto said:
I have found that the easiest thing to do is just put the files that you want to use to replace the old ones into a signed zip and then flash just those files I have tried altering a rom file with no success
Click to expand...
Click to collapse
Oh well, was trying to have a one step zip. I guess I can make at least have a 2 step process which is better than 4-5.
Thanks,
Ceger

Yes you can modify just about anything in the rom and flash your zip as long as it is signed and the update script is correct. I always make all my changes to a rom before flashing it so i do not have to flash several different things etc.
The update script is located in RomName\META-INF\com\google\android\
Lets look at a very simple update script to show you what i mean.
In this update script it is to write something to /system
example:
show_progress 0.1 0
copy_dir PACKAGE:system SYSTEM:
show_progress 0.1 10
We see here that whatever is in the system folder within the signed zip will be written to the phone
in this case i am writing /system/app/mobiledefense.apk
That will be the only file written to the phone and will be written to /system/app
The update script is not specific to every file so you can have 1 thing in the system folder or 100 and it will write everything in there.
One thing that many people mess up on is not using a update-script file when they sign a .zip file. The recovery has to know what to flash or it will not flash anything.
So the answer is yes you can change many things and then flash the signed update.zip file.
Not everything can be done this way but most things will work.
But for example changing the boot sceen can be done even if the file names are different as long as the folder structure stays the same and the .XML file is the correct one for the boot screen. I opened the .zip of a rom deleted everything out of the boot screen folder and dropped in all the files from the nexus one hero hybrid boot screen re signed the zip and everything flashed perfect. I changed many other things as well in the .zip like rosie.apk, sound files, lockscreen files, busybox files, added apps to /system/app and just resigned the zip and everything flashed the way i wanted it to and works perfect.
The way to correctly zip a file is to extract the zip modify what you want then select everything inside the zip right after you open the folder and the highlight everything select add to archive and then zip it up now sign that .zip
so say you extract the ROM and it is named Rom123 now you will have a folder named Rom123 open that folder and select everything file or folder in there and then hit add to archive that will make another zip right there called Rom123.zip pull that zip out to the desktop and sign that zip file and thats it.
I Know that is confusing as it is late as hell and i am tired but wanted to answer this real quick.

zippy-man said:
Yes you can modify just about anything in the rom and flash your zip as long as it is signed and the update script is correct. I always make all my changes to a rom before flashing it so i do not have to flash several different things etc.
The update script is located in RomName\META-INF\com\google\android\
Lets look at a very simple update script to show you what i mean.
In this update script it is to write something to /system
example:
show_progress 0.1 0
copy_dir PACKAGE:system SYSTEM:
show_progress 0.1 10
We see here that whatever is in the system folder within the signed zip will be written to the phone
in this case i am writing /system/app/mobiledefense.apk
That will be the only file written to the phone and will be written to /system/app
The update script is not specific to every file so you can have 1 thing in the system folder or 100 and it will write everything in there.
One thing that many people mess up on is not using a update-script file when they sign a .zip file. The recovery has to know what to flash or it will not flash anything.
So the answer is yes you can change many things and then flash the signed update.zip file.
Not everything can be done this way but most things will work.
But for example changing the boot sceen can be done even if the file names are different as long as the folder structure stays the same and the .XML file is the correct one for the boot screen. I opened the .zip of a rom deleted everything out of the boot screen folder and dropped in all the files from the nexus one hero hybrid boot screen re signed the zip and everything flashed perfect. I changed many other things as well in the .zip like rosie.apk, sound files, lockscreen files, busybox files, added apps to /system/app and just resigned the zip and everything flashed the way i wanted it to and works perfect.
The way to correctly zip a file is to extract the zip modify what you want then select everything inside the zip right after you open the folder and the highlight everything select add to archive and then zip it up now sign that .zip
so say you extract the ROM and it is named Rom123 now you will have a folder named Rom123 open that folder and select everything file or folder in there and then hit add to archive that will make another zip right there called Rom123.zip pull that zip out to the desktop and sign that zip file and thats it.
I Know that is confusing as it is late as hell and i am tired but wanted to answer this real quick.
Click to expand...
Click to collapse
Perfect, just what I was looking for.
Thank you, just made my day!
Ceger

[Q] I want to make a theme...

But I don't exactly know how to get there.
I'm runing Wolfbreak's CM ROM V055, afraid to go to V06 because it might break my kernel install(still getting info on just what to do)
What I'm wanting is:
The status/pulldown bars(all icons except Wifi, and I want to keep Cyanogen 6's default slidey bar[the thing that ends up at the bottom]), and the animations from the theme used in SEMPITERNAL's Eternity 2 Build 0003a ROM. That will have to be ported to FroYo, I'm afraid(unless my theory at the bottom of this post will work).
I want the menu from LUCID-X10 by SicNside, with the black BG and white elements, but the png forthat i guess I'll have to negative a white hdpi one.
That's about it, the rest i want from arc theme which is default on my current ROM, including tickboxes, those arrows inside circles, the menu icons, etc.
My theory to sort of make this is to get the two involved APK's(default in CM and default in Eternity) onto my computer, and make them ZIP's. Then i can extract the drawable-hdpi folders from each and paste what I want from Eternity into Arc. Then I can replace the drawable-hdpi folder in the Arc framework file, and zip it at store.
That's where I stop knowing what I'm doing. Searching has not found me a guide on just how to make a framework-res.apk, nor even really making a theme altogether. All i can find is about xml files, resources, never anything about actually making the apk correctly.
Help, please?

I am stuck at the same point as you, I have no idea where to go from here :S

Anyone? I'm sure the two of us aren't the only ones...

Here's a zip of what I want. All I did was:
Took the framework-res.apk from the ETERNITY Rom and from the CM ROM, and pasted the png's i wanted from Eternity into drawable-hdpi-v4 in CM framework. Now, can someone make this work, please?

Its quite easy.
Just select the images you want to change.
Then open the framework-res.apk of your ROM with winrar or 7zip your choice.
Without extracting the files drag and drop the files to the winrar window in the right place. If you want to change images in drawable-hdpi migrate to res/drawable-hdpi and drag and drop images there.
Now close the archive and type this:
Code:
adb push <path to modified framework> /sdcard/framework-res.apk
adb shell mount -o remount,rw -t yaffs2 /dev/block/mtdblock2 /system
adb shell dd if=/sdcard/framework-res.apk of=/system/framework/framework-res.apk
Make sure you take a backup with xrecovery before doing this. If you do something wrong you may end up in a bootloop. In that case just restore from backup and try again!

realunited123 said:
Its quite easy.
Just select the images you want to change.
Then open the framework-res.apk of your ROM with winrar or 7zip your choice.
Without extracting the files drag and drop the files to the winrar window in the right place. If you want to change images in drawable-hdpi migrate to res/drawable-hdpi and drag and drop images there.
Now close the archive and type this:
Code:
adb push <path to modified framework> /sdcard/framework-res.apk
adb shell mount -o remount,rw -t yaffs2 /dev/block/mtdblock2 /system
adb shell dd if=/sdcard/framework-res.apk of=/system/framework/framework-res.apk
Make sure you take a backup with xrecovery before doing this. If you do something wrong you may end up in a bootloop. In that case just restore from backup and try again!
Click to expand...
Click to collapse
Grr, sorry but right now all my failure is just making that less clear. Type that where? Drag the files to the winrar/7zip window? Isn't that where i dont want them?
Ive followed all the different sets of instructions including yours on this forum as closely as i can make sense of them and always end up with a stream of FC's and reboot loops.
EDIT: does it only work on the stock kernel? I'm running Trip's kernel. I just pulled the framework apk then pushed that same apk back and it's still doing it.
EDIT 2: ok no stock kernel and its still doing it WHY THE HELL IS IT DOING THIS?!?!? I FLASHED THE SAME DAMN STOCK FRAMEWORK!

ok if i got the modded framework apk to my sdcard and used root explorer to paste it in, should that work? This laptop might be what's causing it

I have posted few tips here n there when ever people ask about it.
Check this for overall requirements
For your requirement, skip the optimization part out and just do image swap.
Like realunited123 said, dont extract, just open from 7zip, I use Win RAR and drag and drop the new image to the correct folder.
You need to remember few things here, check images name matches against old to new. Other important thing is resolution. you might get in to trouble if you take mpdi and put it to hdpi.
after updating the framwork I made a small template for you guys to play with.
Download attaches zip file open and go to
Framewrok-SJ.zip\system\framework folder and drag and drop the modified framework-res.apk
Dont try to install the attached file. its only a template for you guys to start working on....
After drag and drop you will see zip file size increased.
Simply copy to SD card and install via Xrecovery
You can try any framework to install like this without adb stuff
Remember to make a backup... because you will definitely screwup... we all have...... LOL
Realorasz said:
ok if i got the modded framework apk to my sdcard and used root explorer to paste it in, should that work? This laptop might be what's causing it
Click to expand...
Click to collapse
Well my friend if you have already did this. it will be your first screwup
Dont use root explorer or titanium for this work. Read this post I mention yesterday.......

Shiwantha said:
I have posted few tips here n there when ever people ask about it.
Check this for overall requirements
For your requirement, skip the optimization part out and just do image swap.
Like realunited123 said, dont extract, just open from 7zip, I use Win RAR and drag and drop the new image to the correct folder.
You need to remember few things here, check images name matches against old to new. Other impotent thing is resolution. you might get in to trouble if you take mpdi and put it to hdpi.
after updating the framwork I made a small template for you guys to play with.
Download attaches zip file open and go to
Framewrok-SJ.zip\system\framework folder and drag and drop the modified framework-res.apk
Dont try to install the attached file. its only a template for you guys to start working on....
After drag and drop you will see zip file size increased.
Simply copy to SD card and install via Xrecovery
You can try any framework to install like this without adb stuff
Remember to make a backup... because you will definitely screwup... we all have...... LOL
Well my friend if you have already did this. it will be your first screwup
Dont use root explorer or titanium for this work. Read this post I mention yesterday.......
Click to expand...
Click to collapse
Well i did try swapping mine with the framework apk in the froshed zip. I'll try it with yours though.

Shiwantha said:
I have posted few tips here n there when ever people ask about it.
Check this for overall requirements
For your requirement, skip the optimization part out and just do image swap.
Like realunited123 said, dont extract, just open from 7zip, I use Win RAR and drag and drop the new image to the correct folder.
You need to remember few things here, check images name matches against old to new. Other impotent thing is resolution. you might get in to trouble if you take mpdi and put it to hdpi.
after updating the framwork I made a small template for you guys to play with.
Download attaches zip file open and go to
Framewrok-SJ.zip\system\framework folder and drag and drop the modified framework-res.apk
Dont try to install the attached file. its only a template for you guys to start working on....
After drag and drop you will see zip file size increased.
Simply copy to SD card and install via Xrecovery
You can try any framework to install like this without adb stuff
Remember to make a backup... because you will definitely screwup... we all have...... LOL
Well my friend if you have already did this. it will be your first screwup
Dont use root explorer or titanium for this work. Read this post I mention yesterday.......
Click to expand...
Click to collapse
Is it just me is are you a savior!! Thanks, it's working now!!!!
Hey, by the way, can you teach me how i can make an xrec zip of a dialer mod I made? I want to post it on the CM 6 thread so people can like actualy install it but the only way i currently have for that is adb(which works on apps, but not themes...)
And one more thing, Is any sort of file transfer possible with ADB, or will i have to stick with WiFi File Explorer?

Realorasz said:
Is it just me is are you a savior!! Thanks, it's working now!!!!
Hey, by the way, can you teach me how i can make an xrec zip of a dialer mod I made? I want to post it on the CM 6 thread so people can like actualy install it but the only way i currently have for that is adb(which works on apps, but not themes...)
And one more thing, Is any sort of file transfer possible with ADB, or will i have to stick with WiFi File Explorer?
Click to expand...
Click to collapse
Thats good news.. one less problem to deal with....
create a folder call app on your pc and drag it to system folder in the zip file.
So you should have framework and app folders inside of it.
then copy Phone.apk & Contacts.apk and try to install via xrecovery.
there is a chance you might not be able to install as my initial signing of Zip file dosent included app folder and so MANIFEST.MF & CERT.SF dont have reference. on the other hand during installation Xrecovery dont check
key signature.
I didnt test this way so try, no harm will come to your phone.
Dont know about wifi explorer much. Im testing with adb generally. only final version im publishing in xrec.

Can you teach me how to make that meta inf stuff?
Sent from my X10a using XDA Premium App

Realorasz said:
Can you teach me how to make that meta inf stuff?
Sent from my X10a using XDA Premium App
Click to expand...
Click to collapse
You cannot, after putting stuff, need to sign by app sign tool or there are alternative called APK manager... search its on XDA i think........

I'm not getting it. The update script ange all that forxrecovery...?
Sent from my X10a using XDA Premium App

Realorasz said:
Can you teach me how to make that meta inf stuff?
Sent from my X10a using XDA Premium App
Click to expand...
Click to collapse
In META-INF create \com\google\android folders for update-script file.
Make update-script a text file containing the following
Code:
show_progress 0.1 0
copy_dir PACKAGE:system SYSTEM:
show_progress 0.1 10
Be sure to add an extra blank line after "show_progress 0.1 10"
Compress META-INF and system folders to a zip, then move to your sd and sign with signAPKtic which is a free app in the market. Use "test keys" to sign. (signAPKtic is easiest to me,or you can use 1 of the methods Shiwantha suggested to sign)
I would also suggest zipaligning your apks before adding them to optimize your phone's performance when accessing them. Search zipalign on XDA and you'll find what you need...
*Edit- Also, X10 Mod Tool is great for pushing/pulling apks via adb without all the typing. I use it a LOT when testing different pieces of themes.

AyDee said:
In META-INF create \com\google\android folders for update-script file.
Make update-script a text file containing the following
Code:
show_progress 0.1 0
copy_dir PACKAGE:system SYSTEM:
show_progress 0.1 10
Be sure to add an extra blank line after "show_progress 0.1 10"
Compress META-INF and system folders to a zip, then move to your sd and sign with signAPKtic which is a free app in the market. Use "test keys" to sign. (signAPKtic is easiest to me,or you can use 1 of the methods Shiwantha suggested to sign)
I would also suggest zipaligning your apks before adding them to optimize your phone's performance when accessing them. Search zipalign on XDA and you'll find what you need...
*Edit- Also, X10 Mod Tool is great for pushing/pulling apks via adb without all the typing. I use it a LOT when testing different pieces of themes.
Click to expand...
Click to collapse
I think adb mask controller can do it in the zipalign tab> zipalign /system/app button.
And what format does the text file need to be in?

Signapktic is either telling me the zip doesnt exist or gives me an unzp error... and I supposed to me signing the apk's or the zip?
EDIT: I think I got it. Zip signer instead of signapktic. Let's see what my phone does.
Ok it looks like it worked.

Make sure there are no spaces in the zip's name. Looks like you got it!
Sent from my X10a using XDA App

AyDee said:
Make sure there are no spaces in the zip's name. Looks like you got it!
Sent from my X10a using XDA App
Click to expand...
Click to collapse
So does that mean it worked for you?
EDIT: Oh, I'm stupid, I didn't even post it. Can you test it please?

It looks like it's signed already. Are you asking me to test the app or signature?
Sent from my X10a using XDA App

Need someone to compile an APK for me

Alright, so I decompiled the apk, edited the XML files I needed to. And now it won't compile. Keeps throwing java errors. Would someone be so kind to compile this for me?
This is a System APK so it needs to be compiled and signed. If you're curious or it needs extra files pulled from somewhere, it's the SystemUI.apk in the CM7 Droid nightly build 88.
Thanks!!
Here's what I need compiled:
http://mikelierman.com/SystemUI.apk.zip

0vermind said:
Alright, so I decompiled the apk, edited the XML files I needed to. And now it won't compile. Keeps throwing java errors. Would someone be so kind to compile this for me?
This is a System APK so it needs to be compiled and signed. If you're curious or it needs extra files pulled from somewhere, it's the SystemUI.apk in the CM7 Droid nightly build 88.
Thanks!!
Here's what I need compiled:
http://mikelierman.com/SystemUI.apk.zip
Click to expand...
Click to collapse
What did you use to decompile it? APK Manager from this thread?
http://forum.xda-developers.com/showthread.php?t=695701
Oh and once you compile it, you don't have to sign it because is a system app and not a regular app.

0vermind said:
Alright, so I decompiled the apk, edited the XML files I needed to. And now it won't compile. Keeps throwing java errors. Would someone be so kind to compile this for me?
This is a System APK so it needs to be compiled and signed. If you're curious or it needs extra files pulled from somewhere, it's the SystemUI.apk in the CM7 Droid nightly build 88.
Click to expand...
Click to collapse
What errors are you getting from apktool? It's going to be hard for someone else to compile an apk that has not been decoded by them and not knowing what files have been changed. Letting us know at least what .png or .xml files were modified would be a start but will work best if we could just figure out why you aren't able to build with your modifications.
The first thing I noticed from the zip you attached is that it's missing the apktool.yml file that should get created a package is decoded. Second, make sure to pull /system/framework/framework-res.apk so resources can be decoded/built properly. If you are using APK Manager, use option 10 to decode with framework-res.apk. If you are just using apktool run the command "apktool if framework-res.apk" before decoding.
mazdarider23 said:
Oh and once you compile it, you don't have to sign it because is a system app and not a regular app.
Click to expand...
Click to collapse
SystemUI.apk actually does get signed using the platform key. The easiest way to do so in my opinion is to use ZipSigner 2 on your phone. Also, once you've placed the modified SystemUI.apk into /system/app make sure it's permissions are rw-r--r--(chmod 644 /system/app/SystemUI.apk) and it's owner:group is root:root(chown 0:0 /system/app/SystemUI.apk). Next reboot to recovery, wipe dalvik-cache and cache, then reboot.

MongooseHelix said:
What errors are you getting from apktool? It's going to be hard for someone else to compile an apk that has not been decoded by them and not knowing what files have been changed. Letting us know at least what .png or .xml files were modified would be a start but will work best if we could just figure out why you aren't able to build with your modifications.
The first thing I noticed from the zip you attached is that it's missing the apktool.yml file that should get created a package is decoded. Second, make sure to pull /system/framework/framework-res.apk so resources can be decoded/built properly. If you are using APK Manager, use option 10 to decode with framework-res.apk. If you are just using apktool run the command "apktool if framework-res.apk" before decoding.
SystemUI.apk actually does get signed using the platform key. The easiest way to do so in my opinion is to use ZipSigner 2 on your phone. Also, once you've placed the modified SystemUI.apk into /system/app make sure it's permissions are rw-r--r--(chmod 644 /system/app/SystemUI.apk) and it's owner:group is root:root(chown 0:0 /system/app/SystemUI.apk). Next reboot to recovery, wipe dalvik-cache and cache, then reboot.
Click to expand...
Click to collapse
Well I'm glad you told me because little old me has been modifying system apps since the days of the nexus one and I've yet to sign one....I think is all depends on who's doing the modification...hahahaha....Good luck 0vermind on finding someone to compiling your systemui.apk!

mazdarider23 said:
Well I'm glad you told me because little old me has been modifying system apps since the days of the nexus one and I've yet to sign one....I think is all depends on who's doing the modification...hahahaha....Good luck 0vermind on finding someone to compiling your systemui.apk!
Click to expand...
Click to collapse
I'm not quite sure what to make of that comment...I certainly wasn't trying to step on your toes so I apologize if it came across that way. Just wanted to help avoid and rule out any issues that might come up. With APK Manager or by using 7zip, you can move the manifest and/or META-INF folder containing the signature from the original but to imply that system apps are not signed is incorrect.
I also think it is important that those messing with system apps understand that there are different keys used to sign apps. For anybody reading this that wants to figure out how certain packages are signed, here's a bit of an explanation. If we extract SystemUI.apk, we see a directory called META-INF. This holds the key/signature info. The key's serial number can be determined with the following command:
Code:
keytool -printcert -v -file SystemUI/META-INF/CERT.RSA | grep SerialNumber
You can check other apks/jars and noticing which have matching serial numbers, meaning they are signed with the same key...
platform key - SystemUI.apk, Settings.apk, Phone.apk, etc
shared key - Contacts.apk, UserDictionaryProvider.apk, etc
test key - Calendar.apk, DeskClock.apk, etc
google proprietary key - Vending.apk, Talk.apk, etc (including some market user apps like Maps, VoiceSearch, Docs)

MongooseHelix said:
I'm not quite sure what to make of that comment...I certainly wasn't trying to step on your toes so I apologize if it came across that way. Just wanted to help avoid and rule out any issues that might come up. With APK Manager or by using 7zip, you can move the manifest and/or META-INF folder containing the signature from the original but to imply that system apps are not signed is incorrect.
I also think it is important that those messing with system apps understand that there are different keys used to sign apps. For anybody reading this that wants to figure out how certain packages are signed, here's a bit of an explanation. If we extract SystemUI.apk, we see a directory called META-INF. This holds the key/signature info. The key's serial number can be determined with the following command:
Code:
keytool -printcert -v -file SystemUI/META-INF/CERT.RSA | grep SerialNumber
You can check other apks/jars and noticing which have matching serial numbers, meaning they are signed with the same key...
platform key - SystemUI.apk, Settings.apk, Phone.apk, etc
shared key - Contacts.apk, UserDictionaryProvider.apk, etc
test key - Calendar.apk, DeskClock.apk, etc
google proprietary key - Vending.apk, Talk.apk, etc (including some market user apps like Maps, VoiceSearch, Docs)
Click to expand...
Click to collapse
Thanks, I didn't know this! I'm glad there's people like you and mazdarider23 on this forum that know **** like this!!!

Can someone make this into an update.zip/teach me how to do it?

I ported a theme for a XDA user here in this forum. But I cant seem to know how to make it into update.zip status. Can someone make it for/teach me how? http://www.mediafire.com/download.php?cxth4pchn488p6q and http://www.mediafire.com/download.php?rmnsr07y3m92d6i

There is a basic overview of how to create an update.zip file here, but this is out of date and won't fully work with our phones. The folder structure and basic process are the same though, so it will be a good overview.
The part that won't work with that guide is the update-script, as we use the new update-binary/updater-script that uses edify for flashing. It's more complicated, but I believe it also allows you to do more stuff. Here is an overview of the new functions of edify and what the old amend versions would have been.
Usually, the easiest way to get what you want is to download something that is known to work for what you are doing (theme, rom, etc.) and just replace the contents of it. You can look at the updater-script and edit it as needed. The basics are setting up the progress bar, mount /system (or where ever it is you're copying files to), copy files, set permissions (if needed), and then you should be done.

imnuts said:
There is a basic overview of how to create an update.zip file here, but this is out of date and won't fully work with our phones. The folder structure and basic process are the same though, so it will be a good overview.
The part that won't work with that guide is the update-script, as we use the new update-binary/updater-script that uses edify for flashing. It's more complicated, but I believe it also allows you to do more stuff. Here is an overview of the new functions of edify and what the old amend versions would have been.
Usually, the easiest way to get what you want is to download something that is known to work for what you are doing (theme, rom, etc.) and just replace the contents of it. You can look at the updater-script and edit it as needed. The basics are setting up the progress bar, mount /system (or where ever it is you're copying files to), copy files, set permissions (if needed), and then you should be done.
Click to expand...
Click to collapse
Awesome! Thanks a lot man.

How to extract .dat from Custom Rom Lollipop

I like modify all my ROMs, and in Android 5.0, the /system is on a system.dat and I don't know how to extract it, please help me

Up ?

I am up to this too. Before this .dat thing was very easy to de-bloat the ROM before installing it.

A different approach is to have a flashable zip with an updater- script that deletes apps / files and adds / changes etc. Its a bit more work at the beginning but it will save you editing every ROM zip you download as it'll only take a second to flash it.

rootSU said:
A different approach is to have a flashable zip with an updater- script that deletes apps / files and adds / changes etc. Its a bit more work at the beginning but it will save you editing every ROM zip you download as it'll only take a second to flash it.
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Can you provide/point us a simple tutorial for making a simple flashable script that removes apps?
Thanks.

01 Vlatce said:
Can you provide/point us a simple tutorial for making a simple flashable script that removes apps?
Thanks.
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I uploaded mine in this thread:
http://forum.xda-developers.com/google-nexus-5/help/editing-build-prop-via-flashable-zip-t2949308
Please note, it deletes some stuff, adds anything in the /system folder of the zip to your /system partition and also runs a bash shell script (.sh) to modify the build prop. If you look in the updater-script, you should be able to figure it out from there.

rootSU said:
I uploaded mine in this thread:
http://forum.xda-developers.com/google-nexus-5/help/editing-build-prop-via-flashable-zip-t2949308
Please note, it deletes some stuff, adds anything in the /system folder of the zip to your /system partition and also runs a bash shell script (.sh) to modify the build prop. If you look in the updater-script, you should be able to figure it out from there.
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Already figured it out. Thank you!

you can also get an ext4 fs editor (the .dat is actually an ext4 image), such as ext4_unpacker and so on

http://forum.xda-developers.com/showthread.php?p=57633970