Asus P552w/P565 ROM Decryption !!

[rishi2504]

For all those who are struggling to extract the contents of the '.abi' file for P552w and P565, here is a good news !!

I found these tools somewhere on a non-English forum, while searching for the decryption tools.

It is a command-line tool that directly works on the '.abi' file, and produces the '.nb0' file.
Part02.nb0 is the OS Image and Part03.nb0 is the ExtROM.

Let me know if you face any difficulties. I have used it on my P565 and successfully dumped the ROM (using imgfs tools on the the OS image). Working on the kitchen now....

Hoping for someone to come up with a kitchen for P552w/P565 soon...lol

cheers,

[gerry86]

We also have decrypted P565's rom,and now the problem is how to encrypt the rom.Do you found any tools to encrypt it?

[rishi2504]

We also have decrypted P565's rom,and now the problem is how to encrypt the rom.Do you found any tools to encrypt it?

Well, decryption and encryption are both resolved. The only issue is to find where the IMGFS checksum is stored, and update the new checksum there. The '.abi' ROM Header is encrypted using some complicated encrption( not XOR ), and I have not been successful in decoding it as of now.

[VanGog]

I see you're all experts here. Maybe you can help me.
I just want to know if it is possible to upgrade my italian ROM with an english one (P552w)?
If not I guess I can throw away my Asus while I don't speak Italian :(

Thanks for your help,

[rishi2504]

I see you're all experts here. Maybe you can help me.
I just want to know if it is possible to upgrade my italian ROM with an english one (P552w)?
If not I guess I can throw away my Asus while I don't speak Italian :(

Thanks for your help,
Sure buddy, no need to throw it away...

Just follow these simple steps :
1. Ensure that your Storage card capacity does not exceed 2GB and is not corrupt.
2. Connect the device using activesync and wait till the connection is established.
3. Go to file explorer on your PC and enable the option to display hidden files and folders.
3. Take your English ROM ( .exe file) and execute it from your PC.
4. Press 'next' till you see the error message that the ROM is not meant for your device. Wait !!
5. While this message is still being displayed, go to the folder which contains your ROM ( .exe file). You will see a file called 'tmp_rom.abi'. Rename this file to 'GM5.abi'.
6. Now close the error message screen.
7. Copy 'GM5.abi' to your Storage card.
8. Now Press the "Navipad down"+ "Reset" buttons and keep them pressed until you see the reboot screen.
9. That's it. The ROM flashing process will begin automatically.
10. Do not press any button till the ROM flashing is in progress. The device wil reboot automatically.

Enjoy your new English ROM.

Disclaimer : Hope you are aware about the risks associated with the ROM flashing process.

[VanGog]

First of all, thanks rishi for your help, but in my case something doesn't work.
I get to the boot screen where it says that it can not find the file (but it is on the card).
I followed all the steps (including 1GB storage card) but always the same, no success.
Is it possible that this is because of my Asus which was I suppose unlocked before I bought it. It has an Italian mobile provider logo on boot screen?

Do you have any other solution for my problrm?

Thanks again for your effort,

Van Gog


Found a solution!!!!
The name of *.abi file must be the same as the name of an *.exe file!
WOW!

Thanks a lot, you saved my Asus!! :)

Greetings,

VanGog

[lizaq]

It should be GM2_name.abi and don't forget to clear hidden attribute.
For me it works also on 4GB card.

[weiqiix]

rishi, you said that "decryption and encryption are both resolved", is it using the same tool? I cannot say I got it... :confused:

[ginkage]

weiqiix,
You may use this tool: http://forum.xda-developers.com/showthread.php?t=511158

[weiqiix]

Thank you very much, I'll test it right now.

Then I could even understand what (and how) to do with those *.nb0 files,
and who knows, I could understand my p552w's internals ;)

[myba2s]

If anyone can fix the camera and video problem that will be perfect! :)