How to upgrade/reinstall Penta Tablet OS

To do so you have to go to the below link

https://docs.google.com/folder/d/0B1ecPgcLz140VXg3RDdJY2QyR0k/edit#

Now follow the instruction given below:

Instruction to upgrade/reinstall tablet OS

Make sure you do the following steps on a system running Windows XP service pack 3 and your device is fully charged.

• Download all files in a folder (Right click on a file and choose the option “Download”)
• Extract files in a folder
• Folder will have two folders file 1 and file 2
• Now open file 1
• Open file IUW1.2
• Once the window is open
• Click boot disk
• Insert a micro SD card in a card reader and attach it to the system {make sure no other removable drive is attached to the system while following these instructions}
• In the window where it says "Choose a wrapped image" browse and open the file 2 and select file F117_android_1310721.ius
• Once done now select the micro sd card from the dialog “Choose an SD drive”
• Then select “Boot Disk” and  click "Burn"
• When the process is complete, you will not see any FILE/folder on the micro sd card however the file is there.

• On the device do the Following

• Insert microsd card
• Turn on device
• Device will boot from sd card
• Now follow on screen instruction