[HTC Butterfly S] butterfly s 901e:
Disclaimer:- Below mentioned links was upload By [MENTION=4764401]daorderdillon[/MENTION] this thread is comprehensive and explains in lot more detail

S-off,Rooting,firmware install,ota install,Rom install for butterfly s.

Carefully read each step before acting

don't use any kind of screen locks

Use this link to download 901e or 901s model attachments

Before We Begin

Have a micro USB cable handy.

Download and install the HTC USB drivers. Do this by downloading and installing HTC Sync Manager and following the instructions. HTC can be found by going to this link.

You will need this link to download adb and fastboot we will use it later.

All ways remember to uncheck "fastboot" in power tab in settings

Go to setting tap power go to end

And enable USB debugging

Go to setting tap "about" then tap "Software information" then tap then tap 7 times on "build number" to enable developer option enable in settings.

How to unlock Bootloader butterfly s?

Use this link to unlock Bootloader warning this may void your warranty***tampered*** and ***unlocked*** will be written in bootloader but don't worry we will remove it with S-off

if your device not listed use "all other supported device"

Only unlock bootloader isn't much help you will need s-off as well soooo....

How to get S_off butterfly s?

With S-off in other words security off you will be doing a lot of modifications.

We will use Firewater.

YOU HAVE TO BE ON STOCK RECOVERY AND ROM TO PERFORM THIS ACTION

otherwise it will fail horribly

Use this link to s-off

Remove only sync not drivers.

read carefully at firewater instructions.

you will be s-off.

How to Flash firmware butterfly s?

Back up using nandroid google it how to?

This is a test device will be written in recovery so be carefull what you wish for but you can remove it i don't know how but you can search for it in google.

S-off and unlocked bootloader needed

If you have stock CID you can proceed to step 1. If you have any other CID you need to change it before beginning. In this example I am talking about HTC__621 901e model.

Asia with CIDs HTC__044

Hong Kong with CIDs HTC__622

Taiwan with CIDs HTC__621

open up a command window in adb director in C:\adb or where ever you put adb and fastboot

hold shift and click right mouse button to open up a "command window here"

Type these commands.

Write the stock CID back to device by running this:

"adb reboot-bootloader" without ""

Phone should boot to the bootloader. Now run:

"fastboot oem writecid HTC__621" I prefer use this

or you can write

"fastboot oem writecid 11111111"

Now verify that the CID shows on the bootloader screen by running:

fastboot reboot-bootloader

Reboot device if CID on bootloader screen shows the CID. If not retry

*****The next step will wipe the entire contents of the device which includes all of your data. Be sure to back it up to a PC so you can transfer it onto the new device if needed.*****

These instructions are assuming you are running a Windows OS. If you are not then these exe RUU’s won’t be of much use.

Download the firmware.zip file and place in your ADB/fastboot folder. I would recommend renaming the zip file to something simple like ruu.zip.

Boot your phone into the bootloader by holding the power and vol up/down buttons at the same time until you see the bootloader screen or if you have your phone booted you can use the ADB command:

adb reboot-bootloader

Now use these fastboot commands:

fastboot oem rebootRUU

Should see the Silver HTC logo. Now issue this command to flash your phone using the ruu.zip file:

fastboot flash zip ruu.zip

Now the first time you issue a command to flash firmware/ruu in fastboot it only prepares the flash. You have to issue the exact command again:

fastboot flash zip ruu.zip

The green status bar usually does not reach the 100% mark. When the output in the command window is complete, you can reboot:

fastboot reboot

**Notes about the RUU.zip method. You still need to have the proper CID for the RUU. You can run the RUU.zip with super CID, but you will have to lock your bootloader first. If you are running the RUU.zip as base to downgrade all your firmware because you are going to then going to restore a stock Nandroid so the RUU might not be made for your MID, so you may need to edit the android-info.txt inside the ruu.zip to include your MID or CID.

if you have sucessfully did this you can see hboot 1.54

How to install ota butterfly s?

YOU HAVE TO BE ON STOCK RECOVERY,ROM AND S-off TO PERFORM THIS ACTION

1. Check ROM version in Settings-About-Software Information, it MUST match second value in example case 1.21.709.3-1.12.709.2, if you have version different from 1.12.709.2, update will FAIL.

2. Make sure that your device running system without any app/files modifications, otherwise update will FAIL.

3. Your device must be S-OFF AND/OR LOCKED or RELOCKED, being S-ON and UNLOCKED won’t allow you to apply OTA update.

4. Check your recovery, official OTA can be applied ONLY on Stock Recovery, TWRP/CWM/PhilzTouch and etc can’t be used.

5. Now we can copy out OTA package in system storage, I recommend to copy file in root of the Internal Storage but its not necessary.

6. Turn off device.

7. Press Power button and Volume down button, keep them until you see bootloader.

3. After that use volume down button to make a choice at Recovery option and press Power button. Device will reboot in Recovery mode.

4. When recovery starts, you will see red triangle, don’t worry nothing bad happened.

5. Wait for a while and press both Volume buttons and click Power button. This combination allows you to enter Recovery menu.

6. Using volume buttons, navigate to ”apply from phone storage” option and press Power button.

7. Now you can choose your OTA package. In our example it will be stored in data/media/0/OTA_DLXPLUS_U_JB_50_hTC_Asia_TW_1.21.709.3-1.12.709.2_release_333902.zip then press Power button.

8. During installation you might need to follow some instructions on screen. Reboot device when installation finishes.

9. After reboot you will get message that you successfully updated your device

10.If you have already modified you device to a point where no OS is showing in hboot the device will reboot several times.

11.If you want JB 4.3

with sense 5.5 just download it normally in system updates.

if download ota fail

Go to cwm in advance format every thing except external sd card

format system

format internal storage

etc

flash stock firmware

flash cwm recovery

flash stock rom

flash stock recovery

then flash ota

read above and below how to flash

How to install Rom butterfly s?

In order to install rom you will need CWM or Twrp I recommend CWM

1.Boot your HTC Butterfly S into bootloader mode by pressing Volume Down and Power at the same time when it boots up.

2.Connect your HTC Butterfly S to your PC using your micro USB cable.

3.Open a command prompt window in where you put recovery-clockwork-touch-6.0.3.4-dlxpul.img. Do this by going into the fastboot folder, hold down the shift key and right clicking. Once you’ve right clicked, the windows context menu will appear. Select the option ‘open command window here’. A command prompt window will then appear.

4.To flash the custom recovery, enter the command below into the command prompt window.

"fastboot flash recovery recovery-clockwork-touch-6.0.3.4-dlxpul.img"

How to Root butterfly s?

1.Dowload This

2.Put it in internal storage.

3.Reboot into recovery.

4.Use CWM to install zip from sd.

5.Select downloaded .zip.

6.that's it reboot and you are rooted.

How to install rom butterfly s?

1.Download above stock_dlxpul_1.21.709.3.zip or choose from this

2.Put it in internal storage.

3.Reboot into recovery.

4.Use CWM to install zip from sd.

5.Select downloaded .zip.

6.that's it reboot and you have new rom installed.

For more Guide go to This