[Ancestor]

I have just brought my 60 back into use after about ten years. My books are still all there; I downloaded a new memoir in PDF without trouble and it reads well.
However, it did not complete the screen/stylus calibration well. On the third X it froze and I could not get rid of the message to re-calibrate without turning it off.
Is there any way to improve the screen (I do not want to install a new one)?

Does the imperfect calibration really matter? All navigation works, although it's slow and clunky.

Is there a software/firmware update available?

Thanks for any advice