POV 6412 Android Upgrade

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Dear Experts, I have a tab POV T-6412 with the below specs

Specifications of the TAB

Operating system Android 4.2 Jelly Bean
Processor Quad core Cortex A7, up to 1.3 GHz
System memory 1024 MB DDR3
Storage memory 8 GB
Display 10' 1024 x 600
Touchscreen 5-point capacitive
WiFi 802.11 b/g/n
Bluetooth Bluetooth 3.0 HS + 4.0 LE
3G Dual SIM, GSM 850/900/1800/1900 + WCDMA 850/1900/2100
GPS Yes
Webcam 0.3 MP + 2.0 MP
Audio connections 1x headphone
USB Connections 1x micro USB
Card reader 1x Micro SD
G-sensor Yes

I want to upgrade the android OS on this TAB, I have searched for the ROM for this model, but cannot find one. Is there any possibility that i can upgrade android OS on this tab?

Please help as some of the apps are not working on this version

Thanks