[HTC EVO 3D] zemaniel:
ENGLISH

EVO3D GSM ICS 1.53 downgrade BL - UNLOCK without HTCDev!!!

THX XDA user Unknownforce - this is his work, I have tested and it works!

http://xdaforums.com/showthread.php?t=2124142 Here you can also read, because my English is bad.

ALL MAKE AT YOUR OWN RISK, AND I DO NOT TAKE ANY GUARANTEE. PROCEDURE TESTED ON MY EVO 3D WITHOUT PROBLEM.

MAKE SURE THAT IS REALLY YOUR UNIT S-ON!! IF THIS PROCEDURE FOR S-OFF DEVICE,will be irreversibly damaged!! Maybe no way back.

PROCEDURE IS FOR DEVICES THAT ARE THE WARRANTY CHANGE MB WITH ORIGINAL SN A NEW IMEI AND CAN NOT UNLOCK VIA HTCDev.

PHONE MUST BE IN STATE * LOCKED *, * S-ON *, bootloader 1.53!!

REQUIRED MINIMUM KNOWLEDGE OF LINUX (WORK IN TERMINAL) AND ITS LIVE OR INSTALLED VERSION (UBUNTU)

!!! WARNING!!! Command to determine the current misc partition: (in Windows)

"Adb shell cat / proc / partitions"

The phone turned on USB debugging. ADB command used to be in the folder you have made with attempts to unlock HTCDev.

This command displays mmcblk0pxx partitions if you see mmcblk0p32 then your misc partition 32, if not, then is 31 If you see both, it's the one with the higher number (for me 1022)

STEP 1

-------------------------------------------------- ------------------

1) PG86IMG.ZIP your current ROM RUU (3.28.401.1 ICS), copy it to the root of SDCard.

2nd) With the phone powered on battery, reboot into the bootloader, let detect .zip and get to the point where it wants to press Vol-Up - update. DO NOT update!!

3) let the phone in this condition and wait at least one or two minutes.

4) Remove the battery cover and connect the device to the mains.

(USE ORIGINAL HTC - RECOMMENDED, unoriginal may have lower voltage and the phone can be turned off. To turn off also occurs with newer types of SD cards, try 4 -8 GB me it went from A-Data 16 gigabytes CLASS10)

5) Remove the battery. (The device should remain on, if not, start again). Do not return the battery inside.

6) Here is the tricky part.

Read a few times: be ready to pull the power cord out at the right time ...

Press Vol-Up

After 5 seconds from the moment the flash next to message Bootloader Update (Updating) snatches the charger from the phone (not the electrician may still while giving voltage and exceed the time limit!)

Wait a while back and connect the charger. If everything went well, should the red LED on the front of the camera very weakly steady.

CAUTION!! On my phone was bootloader UPDATE very fast - about 3 seconds and hit a BOOT and forth, and BRICK was good after an hour. Be patient and try it a few times. If miss dont uplug cable, let the update to finish and repeat the process again and again and again .......

The device is now BRICK and ready for the next step.

STEP 2 - LINUX part

-------------------------------------------------- ------------------

DO NOT CONNECT PHONE - WAIT FOR PROGRAM

STILL NO PHONE BATTERY!!

1) Run Linux

2) Extract the ultimate.zip to Home folder - the easiest and the best location for further work

(I deleted files for CDMA, GSM only)

3) Launch Terminal, the rights of root (su or sudo-s) (enter your password in linux) - change $ to #

4) go to your ultimate folder - cd ultimate

enter the command chmod 755 ultimate

5) type . / Ultimate-g-d and press Enter.

You will see output:

___________________________________________________________________

==== EVO 3D Ultimate Recovery Tool in 2.5, developed by Unknownforce ====

IMPORTANT: Do not plug in device until TOLD to do so.

Is your misc partition 31 or 32?

____________________________________________________________________

Enter the partition number found in the ADB.

____________________________________________________________________

Downgrade Selected, Ready to begin? (Y / N)

_____________________________________________________________________

Enter Y and Enter

_____________________________________________________________________

Plug in your device now ...

Waiting for device ...

_____________________________________________________________________

CONNECT NOW PHONE. You should see something like this:

_____________________________________________________________________

Found the Correct Device!

Writing image file!

SUCCESS!

Found the Correct Device!

Writing image file!

SUCCESS!

_____________________________________________________________________

all this is:

major@ubuntu:~$ sudo -s

[sudo] password for major:

root@ubuntu:~# cd ultimate

root@ubuntu:~/ultimate# chmod 755 ultimate

root@ubuntu:~/ultimate# ./ultimate -g -d

==== EVO 3D Ultimate Recovery Tool v 2.5.1, developed by Unknownforce ====

GSM Device selected.

!!!WARNING!!! Be sure your device is a GSM Device!!!

You will permanently damage your phone if it's NOT a GSM device!!!

IMPORTANT: Do not plug in device until TOLD to do so.

Is your misc partition 31 or 32?

32

Downgrade Selected, Ready to begin? (Y/N)

y

Plug in your device now.

Waiting for device...

Device Found!

Writing image file!

SUCCESS!

Unbricking...

Writing image file!

SUCCESS!

Cleaning up...

All requested tasks completed.

You may now put your battery back in and boot up!

root@ubuntu:~/ultimate#

__________________________________________________________________________

Now remove the SD card, insert the battery and start the phone bo bootloader. Verify the version 1.49.0007 bootloader, the phone is switched on but loopback on HTC splash screen.

STEP 3

--------------------------------------------------

Make phone to condition.

First To root SD card copy GB 1.20.401.8 again as PG86IMG.ZIP and execute flash Vol-UP+PWR - that is to downgrade to GB executed.

Now device is in * LOCKED * S-ON and GB 2.3.4

DOWNGRADE PACK http://www.ulozto.cz/x1i3NkS/downgrade2-rar