You may be better off without ICS - since I updated, I've had problems all over. WiFi randomly turns itself off, mobile data randomly turns itself on, NetFlix can only play videos at maximum dim, the home row buttons (home,back, search, etc) randomly turn off, making it almost impossible to use the phone in the dark, "Android is upgrading, optimizing x apps" on boot (making a reboot last up to 10 minutes)... No settings in the menu to cover any of this behavior. Yes, I miss 2.3.4, when things just worked and I LOVED my Vivid.
Sent from my HTC PH39100 using Android Central Forums