Which Custom ROM should I choose?

[BRAJESH ROY]

Hi there,

I am having a table Simmtronics Xpad X1010 Tablet with following spec-

Brand	Simmtronics
Graphics	Dual Mali-400
Model ID	X1010
Voice Call	No
Processor	1.2 GHz Cortex-A8

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RAM

1 GB DDR3

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Internal Storage

8 GB

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Primary Camera

0.3 megapixels

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Display Type

10.1 inch TFT LCD Capacitive Touchscreen with 1024 x 600 pixels ,16 M Colors

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Wi-Fi

Yes, 802.11 b/g/n

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Battery Type

5600 mAh Lithium - Polymer

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USB	Yes, 2 x Micro USB
HDMI	Yes

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Operating System

Android 4.0 (Ice Cream Sandwich)

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I want to upgrade the Operating system.
1. Can anyone tell me up to which OS I can go?
2. Where I can find that OS?
3. Steps to install that OS?

Thank you.