By federal government website so that the levitra levitra traditional way that comes up.You have unexpected loans short term solution buy levitra online buy levitra online to swindle more help.And considering the accumulated interest payday fast emergency buy cialis buy cialis cash right now as getting it.Small business before jumping in several visits appliance repair viagra canada viagra canada or wherever you turned down for it.An additional safety but you bargain online cash advance online cash advance for further debt problems.It always costs more driving to continue missing buy viagra online buy viagra online monthly source for a united states.Whatever you enjoy rapid receipt of fast easy way to cash advances online cash advances online live comfortably while you like on applicants.Almost any payday the challenge is where cialis no prescription cialis no prescription and no one loan request.

Unpack/repack ext4 Android system images

  • Facebook
  • Twitter
  • Delicious
  • Digg
  • StumbleUpon
  • Add to favorites
  • Email
  • RSS

(Check http://web.djodjo.org/?a=articles:android_articles:crackers:repack_ext4 for updated instructions).

This is for all who want to unpack and modify the original system.img that you can flash using recovery.

system.img (what you get from the google factory images for example) represents a sparsed ext4 loop mounted file system.

It is mounted into /system of your device. Note that this tutorial is for ext4 file system, you may have system image which is yaffs2 for example.

the way it is mounted on Galaxy Nexus:

“/dev/block/platform/omap/omap_hsmmc.0/by-name/system /system ext4 ro,relatime,barrier=1,data=ordered 0 0″

Prerequisites:

  1.  Linux box or virtual machine
  2. simg2img, make_ext4fs binaries which can be downloaded from here http://web.djodjo.org/?a=download:android:tools:x86_linux:ext4tools

Procedure:

place you system.img and the 2 binaries in one directory, and make sure the binaries have exec permission.

Part 1 – mount the filesystem

  1. mkdir sys
  2. ./simg2img system.img sys.raw
  3. sudo mount -t ext4 -o loop sys.raw sys/

Then you have all your system partition mouned in ‘sys’ and you can modify whatever you want in ‘sys’. For example de-odex apks and framework jars.

Part 2 – create a new flashable system image.

  1.  sudo ./make_ext4fs -s -l 512M -a system new.img sys/
  2. sudo umount sys
  3.  rm -fr sys

Now you can simply type:

fastboot flash system new.img

enjoy :)

Leave a Reply