do we need to put the extended rom cabs in after the wm6 upgrade or is it not needed
If you use a branded ROM for a particular ISP, you should not let any extROM cabs run. That includes the ones that will try to run "in 3 seconds" after you hard reset and after the flash.
If you use the non-branded generic ROM, then you should run whichever cabs you want.
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The only way of discovering the limits of the possible is to venture a little way past them into the impossible.
Any sufficiently advanced technology is indistinguishable from magic.
i let everything run because i wanted to make sure i didn't have any problems, and my phone has never worked this good EVER...not even out of the box. i'm shocked at how efficient it is now; i have no problems at all