uh???, why?, I have 16Gb MS and I have the xmb processor set on default, don't think is 333.
For waves, use flash0 unlocker 0.5, once you use it you can flash the files without bricking. But in order to get the waves working you have to change the theme settings before actually flashing the custom wave file, set them to Original.
If you later try to change the wave setings you'll end up with a semi-brick, so back up your flash0 before doing any flashing.
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