GT-5830i Clone (Konka 73_gb / MT-6573)

This is the device informations :

Model: GT-S5830i

Hello to all memebers
I am asking for your help, i need rom or firmware for GT-5830i Clone (Konka 73_gb / MT-6573) , if possible
an update upper than (2.3.6), thank you for your attentions .

My device info :

Firmware version: 2.3.6

Resolution: 320*480

Manufacturer: Unknown

Serial: 0123456789ABCDEF

IMSI: 603032604690066

MAC: 58:12:43:18:46:e0

Android Version: 2.3.6

Baseband version: MAUI.11AMD.W11.37.SP.V30, 2012/01/09 17:06

Kernel version: konka73_gb-user 2.3.6 830iv1.5F120121128 eng.utk003.1354181216 test-keys