Defragment the memory card occasionally (especially if you tend to keep it full), but DON'T use a defrag utility. Copy the files to your hard disk, format the card, then copy the files back.
A defrag utility will move data around on the card many many many times, and flash memory can only survive so many erase/write cycles.
To the bold purple loonies: It seems to me that discussing the validity of these tips is not off topic.
Apologies, I just want my topic to be on point as much as possible is all.
* Anyway, cleaning the contacts with alcohol can solve some contact issues between R4 and the DS.
* Moving the microSD card around a little in the R4 can help solve SD/TF card error.
* If the DS hangs/stays on the Loading screen, it could be because you are using a SDHC MSD/TF card (4GB or higher), the MicroSD is corrupt itself, you are using a cheap reader like the one that comes with the R4. Take a look in the Micro SD Slot in the R4 and see if anything is impairing the MicroSD from contacting the R4. Your USB Port is faulty, or the R4 is just plain defective.
Keep posting your tips!










