Pokemon Platinum HELP!!!

Hi,
Can anyone help...Pls...
I had problems entering into the R4 interface the second time when i want to play.
Initially when i can get into the game and save my pokemon platinum. But when i switch off and wan to to play. It gets stuck at the "Loading" part and unable to get into the R4 interface. I think, the save file has corrupted my DS menu. I have tried other sources of pkm platinum rom, same problem. Help...I don't know what is happening!!!

It is not the ROM that is the problem. https://www.romulation.org/forum/index.php?topic=1462.0

Replying to #2

Hi,
thanks for the reply. But i have tried all that was said in that link and it doesn't work. The problem still exist even after arm 7 patching and reformatting and changing different microsd card. All don't work. HOW???

I have the same problem, I have R4 v1.21 (which is the version I got with it and it refuses to downgrade).

umm, just manually downgrade or upgrade the firmware... why would you downgrade it anyways. and r4 latest firmware is 1.18, you must have a clone.

Get specific firmware if you have a clone.