Well, I don't think I've run across anyone doing this yet, so I tried it, not sure if it's really working or not, but it boots fine and runs quick. FYI: I'm rooted and running Clockwork recovery, busybox installed too For anyone looking to try it for themselves, here's what I did. First must edit your build.prop file. Pull it, edit it, then push it: Code: 1.) adb pull /system/build.prop 2.) Add 'dalvik.vm.execution-mode=int:jit' (without the '' s) to the end of build.prop 3.) Changed dalvik.vm.heapsize=24m to dalvik.vm.heapsize=38m 4.) Save build.prop Then Code: 1.) adb push build.prop /sdcard 2.) adb push libdvm.so /sdcard 3.) adb push libnativehelper.so /sdcard 4.) adb push dalvikvm /sdcard 5.) Reboot into recovery mode 6.) Mount system, data, sdcard 7.) cp /sdcard/libdvm.so /system/lib 8.) cp /sdcard/libnativehelper.so /system/lib 9.) cp /sdcard/dalvikvm /system/bin 10.) chmod 0755 /system/bin/dalvikvm 11.) chmod 0644 /system/lib/libnativehelper.so 12.) chmod 0644 /system/lib/libdvm.so 13.) cp /system/build.prop /sdcard/build.prop.backup 14.) rm /system/build.prop 15.) cp /sdcard/build.prop /system/build.prop 16.) chmod 0755 /system/build.prop 17.) sync 18.) Unmount system, data, sdcard, etc 19.) Reboot! FYI: I referenced this thread: Dalvik JIT working on Desire with Sense UI! - xda-developers Hope this helps anyone.... Like I said, was a shot in the dark, figured I'd toy with it. Don't know it it's working, or right, but....what the heck.