Getting to ED01 isn't easy without any radio leak. So, to get to ED01, so you can get yer bran' spankin' new modem!, follow these directions.
First, we will downgrade to DL09.
Do this by flashing this DL09 package in Odin (pda button, pda button, pda button)
Then, download this EA28 update.zip, put it on your sd card, reboot to recovery and flash:
Finally, download this ED01 update.zip put it on your sdcard, and reboot to recovery and flash:
Then, flash whatever the latest and great cwr 2.5.x is (I've not kept track.) Do not use cwr 3.x for now, imo. You can then flash one of the stock rooted roms, or root yourself via flashing a super user package from cwr.
Note: Keep in mind that once you Odin CWR to ED01, you MUST also flash a kernel, or rom containing a kernel to replace the stock one, or it will revert you.
Boot first to CWR after Odin, and install one of the above.