bought my 16 gb phone this past wed - was already 1.1.4 with 4.6baseband. ran iplus 2.0b, everything worked within 10 minutes. no issues with maps, wifi, youtube all work fine.
honestly ive read reviews of iplus and ziphone and it is indeed a matter of choice, but for the naysayers of iplus, they are totally wrong...it was easy to use.
The EDGE menu, I´ve been told, only appears if you are on a NON iPhone carrier.
I have Telering(non iPhone carrier) in my iPhone- there is a EDGE menu.
If I use my T-Mobile sim- no EDGE menu present.
This is because if you are on an official iPhone carrier(which T-Mobile is here in Austria) you dont need to change your EDGE settings because they think you are on one of their data plans.