I have DS-Xtreme 4GB and the Arm 7 fix worked fine with mine. Follow this post step by step and you should have no issues. I'm using DS-Xtreme Firmware 1.3. I'm a noobie to this forum and just wanted give big thumbs up because this is a huge help...
My wife's doctor prescribed her a ointment for neck pain, that cost $30. We just read the ingredients, and active ingredient is CBD, found exact ingredients in another off brand ointment online, for only $8. Our healthcare system at its finest.