General Instructions for software upgradation are as follows:
Before starting with upgradation please make sure your Penta T-Pad is atleast 60% charged
Upgrade only if you know it, unsuccessful software updation may cause damage to Tablet pc.
Now, carefully follow the link provided to you.
Make sure you download the driver for the respective Tablet pc only.
Unzip the files using WinRAR.
Now, follow step by step instructions as stated in the manual provided in the file.