Kernel Unpacking

[Guest utternoob]

Hi all

Looking to port a rom from Galaxy Ace to our Skates, but need to unpack kernel and change bootclass path. Has anyone done this, and if so, how. Seen this tutorial and would like to know how good it is http://forum.xda-developers.com/showthread.php?t=901152

Cheers

Terry

[Guest razzmataz1478]

I'm assuming you've got Linux?

You'll need UNYAFFS to unpack an .img file for the Skate.

[Guest utternoob]

Have Linux. Pretty slow but usable with big tasks. What is UNYAFFS?

[Guest hugobosslives]

do some reasearch on unpacking yaffs.

the name is pretty self explanatory. un-yaffs. i.e extract from a yaffs system .img.

[Guest utternoob]

Cheers

[Guest C3C0]

@utternoob

Why do you need to do this? It doesn't make sense to me. Simply use boot.img of any skate rom of the same android version. You cannot use boot.img or any part of it from ace on skate ...

[Guest utternoob]

This guide http://forum.xda-developers.com/showthread.php?t=1598713 says to unpack kernel and change boot class path to make it work. Which one is unclear though :S

[Guest Mtman1]

There's a guide on xda that says that you have to change the bootclasspath to get the Rom to boot. Gimme a sec, I'll find the link

Edit utternoob beat me to it :)

Edited July 18, 2012 by Mtman1

[Guest C3C0]

Of which boot.img?

[Guest razzmataz1478]

If you're porting a Samsung ROM to any other device, I think you need to change the BOOTCLASSPATH of the Skate kernel to make it work. I think, anyway.

[Guest Mtman1]

I think it means copy the bootclasspath from the Rom you want to port kernel to the base roms kernel

Edit: why do I keep on getting beaten to posting stuff today :P

Edited July 18, 2012 by Mtman1

[Guest utternoob]

What would it need changing to? This is it so far: export BOOTCLASSPATH /system/framework/core.jar:/system/framework/bouncycastle.jar:/system/framework/ext.jar:/system/framework/framework.jar:/system/framework/android.policy.jar:/system/framework/services.jar:/system/framework/core-junit.jar

[Guest C3C0]

Well samsung has probably another jar in framework dir that needs to be added.

I cazme accross twframework-res.apk in the past. Is this it?

Edited July 18, 2012 by C3C0

[Guest utternoob]

Thanks. More unpacking required :S

[Guest C3C0]

Just send me what needs to be added to ramdisk files of boot.img and I can make a new boot.img tomorrow for you.

or you can do it yourself. Here is the perl script I use to unpack boot.imgs

split_bootimg.pl.txt

Edited July 18, 2012 by C3C0

[Guest utternoob]

Both unpacked, this is what ace init.rc has as boot class path export BOOTCLASSPATH /system/framework/core.jar:/system/framework/bouncycastle.jar:/system/framework/ext.jar:/system/framework/framework.jar:/system/framework/android.policy.jar:/system/framework/services.jar:/system/framework/core-junit.jar

On normal inspection, both seem the same

Edited July 18, 2012 by utternoob

[Guest C3C0]

It's the same as skate's

[Guest utternoob]

Just leave it then?

[Guest razzmataz1478]

Just leave it then?

You might as well just try it.

[Guest utternoob]

Will do

[Guest utternoob]

Status 6 error. Ideas?

[Guest C3C0]

Remove signatures from META-INF (3 files) or resign your zip

[Guest utternoob]

Status 6 error. Ideas?

[Guest C3C0]

Have you looked into updater-script if everything is OK there?

[Guest utternoob]

Nope, will do