[Upgrading, Modifying and Unlocking] lopestom:
First, I will write what is necessary, so read carefully! Please forgive my english.

Check a new version 7 update in post #63 onward.​

THIS IS NOT MY ROM, I DONT CREATE THIS. I'M JUST ONLY ACCELERATING THE PROCESS OF UPDATING. NOW ALL CREDITS ARE FOR THE TEAM AND BLU PRODUCTS! So you thank its for this in official website:

http://www.bluproducts.com/ ---- http://www.facebook.com/BLU.Products?ref=ts&fref=ts​

ARE SHOWING THAT REALLY ARE A SERIOUS COMPANY AND GREAT GLOBALLY.

The credits for this tutorial is not for me. Are for developers and people who help and become a team for continuous improvement. XDA site for this; Mario Doce; williegomezt; BHARDIK; shahulakthar and all the people who contribute spontaneously.

The following steps must be performed carefully, I do not know if I will update with backup made by CWM. So many beginners, the experienced should know the risks of losing the phone using SPFT. But the process is very simple.

If you do not know how to use SPFT, I suggest taking the phone and the files to a technical assistance to execute this process.​

For beginners: create a specific folder for all files and unzip! Do not worry about losing the IMEIs. It has tutorial for that too.

Before doing anything you need for all drivers SP Flash Tool function properly and install the ROM. I've them had and use Win XP. Some W8/W7 users need to update or install the drivers correctly. See this: MediaTek DA USB VCOM driver for MT6577. **If you already have it, forget it.

Check this for more drivers MT6577. Download your version for SO (W8/W7/Vista/XP )--> [TUT] Instructions MTK6577 USB VCOM Driver Installation

Here's a simple tutorial SP Flash Tool: [TUT]MTK Android (Sp flash tool ) tutorial

1º - Download SP_Flash_Tool_exe_v3.1224.01 and INSTALL drivers: VIVO 4.3 Tool 20130322.rar ---> Just give two clicks in [ Install.bat ] and the drivers will be installed automatically. ------>>> mirror: VIVO 4.3 Tool 20130322.rar

Download driver chipset MTK6577 recognition on the computer after using SP Flash Tool here.

2º - Now everything ready to install ROM JB 4.1.1, download: BLU_D910i_V06_GEN_T8113_20130322_CWM.rar ---->>> mirror: BLU_D910i_V06_GEN_T8113_20130322_CWM.rar

To confirm the whole process steps must plug your phone WITHOUT THE BATTERY when put in USB.

Follow the steps according to the pictures! ----->>>> Android Flash tool Instruction:

I. OPEN FOLDER SP_FLASH_TOOL_v3.1224.01

II. USB SETTING --> CHOOSE USB MODE

III. CLICK SCATTER-LOADING, CHOOSE RELATIVE FILE FOLDER EDITION’S SCATTER FILE --->> nº4 - click OK

IV. CLICK FORMAT, MAKE SURE THAT ITs ON THE THIRD CHOICE ---> Put USB in phone WITHOUT THE BATTERY!!

AFTER THE GREEN CIRCLE SELECT TO DOWNLOAD FIRMWARE -> UPGRADE TO DOWNLOAD THE SOFTWARE​

FINISH --- UPGRADE JB READY!!:D

Remove USB, and put the battery Turning on the phone. Placing initial information and BE HAPPY.

Please moderators, I read about putting external links to paid apps [When you cheat a software developer, you cheat us as a community]. I checked that the apps are free and presented was the only way to accomplish the ROOT.

If this is your decision, I may edit or remove if necessary. Thank you for patience too. It's a my first Thread.