How to install the proper applications?

I just bought a flashcart R4 SDHC Dual Core for my NDSi XL v1.4.5
Whenever I try to download and install the software or firmware for it and extract it there, it either goes to loading screen or white screen.
I'm worried that I might not be able to play using R4 again :(
Please help

The issue is with your NDSi XL v.1.45 blocking new cartridge firmware (kernel) installation; you need to pre-install the R4 on an older NDS handheld or an NDSi running older firmware i.e. v.1.4.3 (max) before it can run on your XL.

W

Replying to #2

Is an NDS Lite okay?

Can I ask on how to do it?

JayDi72 · #3Is an NDS Lite okay?

Yes.

Replying to #4

Just follow what the flash cart's installation document/FAQ tells you to.

Replying to #5

Ah thank you
Is there another alternative to that? Because my flash cart did not come with an installation document or FAQ

There should be a READ ME.txt in the downloaded kernel/firmware archive from its website. Or check out the cart's official website for instructions. In actual, the packaging should have an instruction listed too. But in general it more or less boils down to;
1. make sure your console is fully charged before starting
2. add extracted kernel files to SD Micro & run/follow on screen instruction

Is it the moonshell or rpg?

Moonshell is not the flash cart's kernel/firmware. It's a homebrew used to play .mp3 files, read .txt files, etc. And what is rpg? Role-Playing Game?
The flash cartridge will have an installation manual provided by it. Just send all the extracted file you acquired from the rar/zip package provided by flash cartridge website to the SD Micro and boot it up on your NDSL. It should probably end with .nds which must be run. Once installed, you'll have to leave it in the SD Micro anyway.

Ah thank you :3 I'll try to do it as you say:)