If you are asking if this can be upgraded by UPI4.2 Upgrade Patch, I'm sorry
the answer is "No"...
But, if you are asking if this can be upgraded by buying UPI4.x Upgrade
version, the answer is "Yes".
>I am a user of PI 3 that was shipped with my scanner Microtek E-6 does
>anyone know if this can be upgraded to ver. 4 ?