Great video below, from Tech James.
Ive recently heard alot of talk about certain r4 cards having set lifetimes. Ive always wondered if this is nothing but a myth? In his video Tech James, helps to investigate and finds out first hand.
He tests the R4i TT & the R4i Gold 3ds plus cards, in conclusion he establishes that both cards “do not” have time switches.
The method he used was turning the date on the console forward 5 – 7 years from their purchase date, to see if the cards would still launch their kernels/software.