[HELP] [ROM] Problem mt6575 Vandroid S5

Hello friends, I just replace the android fonts changer and can not boot, I had a hard time finding this type of android, well I usually experience when something like that I just flash ROM and finished but I'm a little confused on this android series . oh yeah, there is one more thing I want to ask to go into recovery mode also confused me. Nobody knows this international brand android? Or you never know the review? In my country this is the brand Advan Vandroid S5. I had little difficulty in finding a suitable Global ROM with this android.
The following specifications and photos from my android.



CPU: Arm® Cortex™ A8 1GHz Processor (256KB L2 Cache)
Internal RAM: 512MB
Internal Memory NAND Flash: 4GB
Operating System: Android 4.0 Ice Cream Sandwich
Display: 5.3 inc WVGA HD Capacitive Screen with 480×800 resolution
Screen Technology: Multi Finger Touch
Camera Resulotion : 8MP Rear Camera and VGA Front Camera with Flash
Connectivity Technology : GSM & 3G WCDMA network, Support Dual SIM Card
2G Network: GSM/GPRS/EDGE/ 850/900/1800/1900MHz
3G Network: WCDMA 900/2100MHz
Integrated WiFi 802.11 b/g/n
Integrated Bluetooth 2.1 + EDR
Support MicroSD card up to 32GB (SDHC)
Features: G-Sensor Control, GPS Navigation, Stereo FM Radio free of charges
Ports: 3.5mm earphone jack, Micro USB 2.0 port; Inside Ports : 2xSIM Card Slot, TF Card Slot
Battery: Lithium Ion 3.7V 2500mAh 9.25Wh

Help for an experienced android world I'm the solution to these problems.

1. How to go into recovery mode.
2. How to flash the ROM android.

Thank you before.