Frash was developed by software developer cOmex, the same guy who brought us the ‘Spirit’ app. Good work cOmex!
Before you can install Frash, you need to make sure your iPad is already jailbroken.
Now for what you were looking for: step-by-step instructions to install Frash on your iPad.
*MAKE SURE TO BACKUP YOUR IPAD*
Follow this method at your own risk.
Step 1: Connect your iPad to your computer. Make sure that iTunes is not running.
Step 3: Once installed, enter the IP address of your iPad in server field. You can find your iPad IP address by going to Settings> Wi-Fi> IP Address.
Step 4: Enter user-name: root and password: alpine (these are default) and also set the protocol to SFTP.
Step 5: Download the Frash.deb file here.
Step 6: Open WinSCP(or CyberDuck for Mac) and navigate to /var/root/media. Now create a new folder by the name of “Cydia”. Open the newly created “Cydia” folder and create another folder inside named “AutoInstall”.
Step 7: Copy the Frash.deb file you just downloaded and paste it in the “AutoInstall” folder.
Step 8: Now reboot your iPad and you should be able to use Flash.
Disclaimer: iPadhacks.com will not be held responsible if you incur any damage to your device following this method. Please use at your own risk.