Applying latest 3DS update may render it unplayable if you modify the hardware
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A system update for 3DS has been released in Europe and the US. Version 4.3.0-10U applies improvements to system stability and makes minor adjustments "to enhance the user experience." There's a caveat, though: after you apply the update, "any existing or future unauthorized technical modification," of the system or software "may render the system permanently unplayable." The use of unauthorized devices in connection with 3DS may also make the handheld unplayable as well. Thanks, CVG.