I have found a way to flash my phone with a good ROM with Google Apps (including the Store!), here is my procedure. (Enschuldigung, mein Deutsch nicht gut für einen so lang und technisch Text)
uleFone V1277 / Star V1277 MTK6577 ROM Flash procedure
Warning:
This procedure is from my personal experience with my own uleFone V1277. I can't guarantee that it will work with your phone.
Greetings:
Thank you to the community of the following forums and websites:
-http://forum.china-iphone.ru (For the ROM)
-http://chinamobiles.org (For the flash tool)
-http://bm-smartphone-reviews.blogspot.fr/2012/05/mt6575-flashing-tutorial.html (for the help)
What do you need.
• SP Flash Tool: SP_Flash_Tool_v3.1222.00 software
SP_Flash_Tool_v3.1222.00 - Downloads - Chinamobiles.org
• A ROM, I used this one: V1277-1009T_120807_OV5647_ICS2V1_V02_COM_EN
Яндекс.Народ
• Windows XP (I didn't tried with Vista/7)
How go in "Flash" mode
-Turn off the phone
-Remove the battery
-Replace the battery
-Plug the phone into the computer
After that, Windows should ask for the driver.
How to install the driver
The driver is in the \SP_Flash_Tool_v3.1222.00\new usb driver directory. The hardware name is. MediaTek PreLoader USB VCOM Port:
TIP:After the installation of the driver, the phone will show an battery logo and will disapear from the Device manager list. thats, OK, the phone will not stay in "Flash" mode if it doesn't receive instruction.
How to use SP Flash Tool
Thats easy, but need a good timing
First, shut down the phone and remove the battery.
Launch "\SP_Flash_Tool_v3.1222.00\Flash_tool.exe
Sélect the "Scatter-loading" file:
"\V1277-1009T_120807_OV5647_ICS2V1_V02_COM_EN\BIN\MT6577_Android_scatter_emmc.txt"
Warning: The "\SP_Flash_Tool_v3.1222.00\MT6577_Android_scatter_emmc.txt" file is almost identic but will cause problems with the user partition.
The .img files list is automatically updated
Press the "Download" button. The program will wait for the phone
Plug the battery in the phone and plug the phone to the computer
If the driver isn't already loaded, windows will ask for the driver
Flash procedure will begin. The progress bar will change of color and will finish with a green "O"