Is my Micro SD broken or my firmware wrong?

I have a R4i Gold with 1.31 kernel, and it has worked for me correctly. But now, every time I try to access it, my DS LIte shows a white screen. It doesn't even show the "Loading..." part.
Is my Micro SD broken?
The files are all there:

Spoiler

- _DS_MENU.DAT
- _DS_MENU.INI
- _SYSTEM_ (folder)
(The 1.31 firmware files)
- moonshl2.nds
- moonshl2_DirectBoot.nds
- moonshl2_AltLoader_DKPr27.nds
(Moonshell 1.10 files)

Do I need to change firmware or is my Micro SD broken?
EDIT: Whoops, sorry. I posted in the wrong place. Move, please. (Damn, I though this was the Flashcart Help section.)

 

I think you got a crap-flashcard. Buy a new one.

Or you can try different kernel versions.

 

My flashcard has been working before, one day I just turned it on and it didn't work. I'll try 1.32 firmware. if it doesn't work, I'll try to get an EDGE. Again.

 

Instead of Edge go for something like Acekard 2i.

 

Nah. I am more familiar with EDGE, and I had one before it broke. And I've heard that Acekards are like 2x expensive.

 

Try re-installing the firmware. Backup all your files and reformat your MicroSD beforehand.

 

Is it likely that my R4i has the problem?

Thanks. I'll try that.

 

Well I saw on a site the iEDGE cost just a tiny but more than Acekard 2i.
But it really depends on what you want to get.

 

Try looking at this store for a new flashcart. I have bought all of mine there, and got them in 2 days in the US. The price was great too.

http://www.wiiloveds.com