Use this guide or the older guide to replace your old 3ds sd card to higher capacity sd card without losing anything. This guide applies to other device too like the Nintendo Switch, without any hidden partition.
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LINK

Old video link : https://www.youtube.com/watch?v=BoKLpmB7GXU

Guiformat : http://ridgecrop.co.uk/guiformat.exe

Alternative link : https://drive.google.com/open?id=1enDHODDr6S_Gg2QTsXkHJS8pGUcc17VM

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MUSIC

https://elements.envato.com/technology-corporate-ambient-background-299NBQL
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DONATION

If you want to make a donation, click the link below

https://www.patreon.com/sthetixofficial

Thank you
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HOW TO CONTACT ME

Facebook : https://www.facebook.com/sthetixofficial
Twitter : https://twitter.com/sthetixofficial
Instagram : sthetixofficial
Discord : sthetix#7311
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source