Wespro epad - need upgrade from android 1.9 to android 2.1 or higher

Hi,
I own this wespro tablet that says it is based on VIA WM8505 400Mhz.
I want to upgrade my tablet from the current version android 1.9 to android 2.1. Any help in connection to this will be highly appreciated.
I am posting the technical specifications for a clear idea of the tablet's hardware.

the technical specifications are as follows:
Wespro 7 Inches MID Model No-epad

* Processor: VIA WM8505 400MHz
* Operating System: Google Android 1.9 OS
* Display: 7 Inches Display Screen
* RAM: 128MB
* Internal Memory: 2GB Nand Flash
* External Memory: Expandable up to 32GB with TF Card
* Built-in Wi-Fi: 802.11b/g
* File Format: Support MP3/WMA/MPEG4/MPEG2/MPEG1/3GP/DIVX/XVID
* Battery Backup: 4-5 Hours
* Functions: Internet surfing, information searching and News reading
* Multimedia: Play Musics, Movies and Online Games
* Battery: Li-polymer 7.4V 1400mAh
* Weight: 0.42kg
* Size: 20.3 x 13.6 x 1.0 cm

Package Contents:
o MID
o Charger
o User Manual
o Ethernet Connector
o Carry Case
o Warranty Card

 

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