You need to make sure it’s not just new pads but an entirely new pad system.
The original pads were single-pad contraptions with their own electronics and housings, all bolted together in an array…this was garbage and inevitably broke. However, you can still get replacement pads for them (that will also break).
The new design was a completely different system - one board of sensors and one sheet of rubber pads. This can be replaced with aftermarket pad sheets as well.
So if it has ‘new pads’ as in colored pad sheets, its got the upgrade. But it’s worth clarifying that its not just new-same-old-shit pads from the first design.
Your mpc will break if it has the old pads.
There are also various levels / prices of jjos - is it the free version or the paid (>$100) version? The paid version is incredible - the free one still beats akai, but the paid versions take it to other levels.
Apologies if this has already been clarified in this thread.