You already can. Just use the stuff that's out on the SDX Developers site.
Yeah, good tip! I used Odin 3.98 to flash SPH-M900_CL14_WORKING_SYSTEM_ONLY and then SPH-M900_CL14_CDMA-ONLY and I'm happy. The hardest part was figuring out why my Windows 7 wasn't recognizing the SPH-M900 when it was in Download mode. I had to manually install the USB driver. (Win 7 wouldn't auto-discover it for me.) I wasn't sure on how to upload the CDMA settings since it wasn't mentioned, but I took a guess and the steps are the same as in flashing the system. Total time was about 11 minutes to flash both files, and several hours to get stupid Windows to work for me. I have 2 more Moments in the family. I'll play with this one a bit longer before I try to score a 300%.
+ I'm loving it. The performance is much smoother - it's what I expected from 800 Mhz when I opened the box.
+ Keyboard does respond better.
+ Seems to connect to the radio's quicker too.
+ Google Maps found me inside my house, which is not in India like it used to think!
+ Didn't lose my settings, wallpaper, email, dl'ed apps, contacts, messages, etc. (I didn't expect that. Thanks Zefie!)
- I'm not a big fan of the new black on white calendar setting though I'm cool with it in the email app.
~ Listening to Pandora now - Not much has changed here. I understand that the audio bug wasn't fixed, but the rest of the optimizations seem to have helped in reducing how often I ran into this bug. There's some minor skipping at the start of some tracks. Tracks now play to completion. And rotating the screen or switching apps still makes it stutter worse than Porky Pig. Overall it's tolerable to the point where I might start using Pandora on the Moment.