Im going to pick a Ps vita in few days and it's at (3.73) ,not

Im going to pick a Ps vita in few days and it's at (3.73) ,not hacked and i heard they released a (3.74) so my question: Do i have to update it

I tried to downgrade my vita, but when i try to boot it on it remain in it's boot state and now i want to update the vita to the firmware 3.73

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