so I'M NEW @ THIS AND SREWED UP SOMEWHERE ! PLEASE HELP

OK SO I JUST GOT THE R4 REVOLUTION LAST WEEK I COPIED ALL THE INFO FROM A FRIENDS R4 TO GET IT WK. I HAVE NOW DOWNLOADED MORE GAMES !! THANKS TO ROMULATION !!!!!!!!! HAPPY TO PAY TO BE PREM MEM ! BUT THEN I GOT BOLD AND THOUGH I'D TRY TO GET A THEME! ??? I DOWN LOADED ONE AND PLACED IT IN MY SYSTEMS/ THEMES 1 FOLDER AND NOW IT DOESN'T WORK AND WHEN I GO TO THE MULTI MEDI SECTION ON THE MENU SCREEN I JUST GET A WHITE SCREEN !!!!!!! PLEASE HELP FIX !! I WOULD LOVE TO HAVE A THEME BUT MORE IMPORTANT DON'T WANT TO SCREW UP ANYTHING. THANKS TO ANYONE WILLING TO HELP !!!!!!

1) don't post in all caps, it's rude
2) please try to post in the correct section, this is a problem with your R4, not the site, therefore it goes in technical help. Moved

Start over. Backup your save games and nds files. Then delete everything, then download the newest firmware from http://www.linfoxdomain.com/nintendo/ds/ and put it in the root of your memory card. Then you should be back to start and be able to play your games, though your new theme won't be there.But since I don't have a R4 flash cart I can't tell you how to install a theme properly.Hope this helps.

https://www.romulation.org/forum/index.php/topic,7694.0.html