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How to change your CID to SuperCID 11111111 k2u k2ul

SuperCID 11111111 for HTC One SV (k2u, k2ul)

As some people were asking and because of the completeness ill post here the guide, to change your cid to supercid. This is the first step to get S-Off and its mostly the same as at One S.

Credits and thanks to jmztaylor for guiding me through this painful session!

Notice:

You must know, that you can brick your device when you are doing something wrong! Only do this, if you know and understand what to do and how to do. Otherwise, let it be.
Ansonsten besser Finger weg!
I am not responsible if your device is bricked or damaged in any way!
Think about this twice!!!

I have tested this on k2_u, others reported success on k2_ul too.
For the other devices of One SV i dont know and dont give any guarantee that it will work.


Requirements:


You should have a working adb/fastboot environment and HTC drivers installed on PC. And you should know, how to handle adb/fastboot/dd commands.
USB-Debugging should be activated on the device.
The smartphone must be unlocked (over HTCdev.com) and must be rooted.
This will only work, if you are on ICS. With Jelly Bean hboot this will not work.

You need a Hex-Editor, i recommend HxD.
You can get your actuall cid with this fastboot cmd:


Result for me: HTC__102

How to:

Open cmd window where your adb is located.
There you make the following commands one after the other:
Now your bootloader is extracted to SD card, then into your adb folder.
Look at the file size of mmcblk0p4.img, it MUST be the same size after changing the cid! Dont flash it back, if it isnt the same size.
Now open the mmcblk0p4.img with Hex-Editor and look, where your cid is located (on my picture it is HTC__102). Afterwards it is followed by your IMEI number.


Now you have to overwrite your cid, Not copy and paste!
That means, put the cursor before H of HTC__102 and then you have to add 8 times the number 1 so it then looks like in the next picture.

If you are doing something wrong, HxD will complain. If not, it should be ok.
Now save.
Dont forget to check the filesize!

Back to command line you have to make the following commands one after the other:

Now you can check your new supercid with the fastboot command:
The result should be 11111111

Now you can go on, making your device S-Off.

Have fun!