guys,

is it OK if we don’t upgrade Firmwares/SW?

As far as software is concern, they really have the improvements but sometimes
they also have some negative impact to other programs or features as well.

Like for example the Wireless LAN update from Sony Download Homepage.
According to them, the update will resolve the issues on security
vulnerability and memory utilization.
But the downside, some parts of the pre-installed VAIO Wireless Switching
Utility may no longer function properly after installing the update.
You need to manually switch between wireless services (by long and with a
restart procedure).

What do you think of those kinds of upgrades? is it not also a downgrade?