Practices for creating a Samsung i9088 Flash ROM (2)

First, add the tutorial of yesterday. The Pit file is the partition table information. Therefore, if you want to select the partition table before the installation, it indicates what type of partition table will be used. This is usually included in the downloaded refresh.

 

Today we will begin to discuss how to unlock these tips.

 

Step 2: Unlock the refresh

 

In this step, we must first understand one thing. We don't need to change the modem (phone). It determines the baseband part of the mobile phone and you cannot solve it, so you can't modify it either.

There are two remaining:
PDA is the Android system package, corresponding to the/System Directory, which must be modified.
CSC, which contains Unicom's special AP, wallpaper, animation and other things. If you do not like Unicom's boot animation, you can also modify it. The AP and time zone are retained, unless you are not in mainland China.

 

The question is, what is tar. MD5? You can use the winhex tool (or other similar binary editing tools) to open the file. At the end of the file, you can see its essence.

 

Remove the MD5 Signature and save it as a tar file.

 

Now tar can be opened using any decompression tool that supports tar format, such as WinRAR, WinZip, and 7zip. Now we can finally see the content in it. It seems like we have known each other. It is exactly what we display in the message window when we use Odin to brush the machine.

 

 

The following describes the opened tar package of the PDA.

 

Factoryfs. RFS is the content in the/system directory of the final mobile phone. It is exactly where we want to modify it.
Cache. RFS is an empty directory. You do not need to change it.
Dbdata. RFS corresponds to the/dbdata directory and has no modification significance.
Boot. Bin content in the boot area. This is important. Do not change it !!
SBL. Bin is called the second boot zone. It is the content of the boot zone.
Param. LFS does not need to be moved. It corresponds to something under/mnt/. LFS.
Zimage, Linux kernel, determines the kernel version displayed on the mobile phone after the flash, generally does not move it (unless it uses 9088 to brush 9000 2.2rom ).

 

Next, we need to unbind the factoryfs. RFS file. Note !!! Now we need the Linux environment (the previous operations are all available in windows, and the subsequent steps are transferred to Linux ).

Use the file command to see what this. RFS is.

 

 

The following is simple. Mount it.

 

# Mkdir/mnt/PDA <br/> # chmod 777/mnt/PDA <br/> # Mount-T auto-o loop/home/share/I9088ZNJL1-PDA-factoryfs.rfs/mnt/PDA <br/> # cd/mnt/PDA </P> <p>

 

You will see everything you want. Is it easy ?!

 

Similarly, you can use a similar method to unbind the CSC tar package and mount the cache. RFS.

 

When you see this, you may be able to do it, but unfortunately, you will find that everything cannot be modified !? Well, we mount a read-only environment.

To modify the content, you also need to perform the next step.