Xperia Neo V BootLoader Unlocking

"Follow this guide on your risk , it may harm your device and your warranty may be void. I'm not responsible for any damage"

Go to the phone dialer
Tap*#*#7378423#*#* then a service menu should pop up,
Tap Service info > Configuration > Rooting Status. if it says boot loader unlock allowed then you are good to go.
If it says not allowed or no or unknown then you will need to pay to have the boot loader unlocked. Or by Sony Ericsson Bootloader unlocker...But you lose some DRM Security Keys which can cause FOTA brick. it will also damage some Sony Ericsson apps like Track ID...
If you want to do it use this site: http://unlockbootloader.sonymobile.com/
But in this guide i use S1Tool...you don't lose DRM Security Keys...
Find your phone's Test Points ex. MT11i Sony Ericsson Experia Neo V

Now install drivers and then open S1Tool choose Patch SEMCBoot and remove your phone's battery and connect the one of the two testpoints with the battery negative with a small wire...Like this:

It's easy to do it (in my opinion)....

















Then you should see something like this:

11/8/2011 1:48:53 AM Welcome to S1 tool. 
11/8/2011 1:48:53 AM That is small and crippled subset of SETOOL2 service tool. 
11/8/2011 1:49:19 AM 
11/8/2011 1:49:19 AM DETACH USB CABLE FROM PHONE 
11/8/2011 1:49:19 AM REMOVE BATTERY FROM PHONE 
11/8/2011 1:49:19 AM ATTACH TESTPOINT 
11/8/2011 1:49:19 AM PRESS "READY", THEN ATTACH USB CABLE TO PHONE 
11/8/2011 1:49:19 AM 
11/8/2011 1:51:58 AM PROCESSING ... 
11/8/2011 1:51:59 AM REMOVE TESTPOINT NOW, THEN PRESS "READY" 
11/8/2011 1:51:59 AM 
11/8/2011 1:52:30 AM 
11/8/2011 1:52:31 AM TO CONNECT NEXT PHONES 
11/8/2011 1:52:31 AM X10 Xperia,E10 Mini,E15 Xperia X8,U20 Mini Pro 
11/8/2011 1:52:31 AM LT15 Xperia ARC,MT15 Xperia NEO,R800 Xperia PLAY 
11/8/2011 1:52:31 AM PRESS AND HOLD "BACK" BUTTON... 
11/8/2011 1:52:31 AM 
11/8/2011 1:52:31 AM ST18 Xperia RAY,ST15 Xperia Mini,SK17 Xperia Mini Pro 
11/8/2011 1:52:31 AM PRESS AND HOLD "Volume Down" BUTTON... 
11/8/2011 1:52:31 AM 
11/8/2011 1:52:31 AM PLEASE ATTACH TURNED OFF PHONE NOW 
11/8/2011 1:52:31 AM 
11/8/2011 1:52:35 AM 
11/8/2011 1:52:35 AM RUNNING S1_LOADER VER "R4A062" 
11/8/2011 1:52:35 AM LOADER AID: 0001 
11/8/2011 1:52:36 AM FLASH ID: "00EC/00B3"

11/8/2011 1:52:36 AM LOADER VERSION: "r4A069"

11/8/2011 1:52:36 AM 
11/8/2011 1:52:36 AM 
11/8/2011 1:52:37 AM SEMC SIMLOCK CERTIFICATE, PROCEEDING 
11/8/2011 1:52:37 AM FINISHED 11/8/2011 1:52:37 AM Elapsed:135 secs.

The only thing that we want to see after the process is:
11/8/2011 1:52:36 AM LOADER VERSION: "r4A069"
the small "r" means that your bootloader is SUCCESSFULLY UNLOCKED... 
But if you go again to the phone dialer and

Tap*#*#7378423#*#* then a service menu should pop up,
Tap Service info > Configuration > Rooting Status.You should see this:

But your bootloader is UNLOCKED 100% !



































Now you are free to install kernels and roms into your phone with fastboot...:)
(In my opinion the best way to install kernels and roms are with Flashtool...)

Download Links:
S1Tool:
http://www.mediafire.com/?w6atur2m806ujqk

FlashTool 0.9.1.0:
http://www.mediafire.com/?j2exa1cc6y2jp6i