Wirelessly posted (iPhone 4: Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_1 like Mac OS X; en-us) AppleWebKit/532.9 (KHTML, like Gecko) Version/4.0.5 Mobile/8B117 Safari/6531.22.7) I need to jailbreak my friends iP4 running the latest firmware (4.2?) so I know I need to downgrade to 4.1 for an untethered JB. Just curious if Bell locks them? Is there anything different I should do prior to the jailbreak, would baseband be affected and if so what difference would it make. Last question, when I JB'd my iP4 I didn't need to downgrade. Nor did I save anything with TinyUmbrella.. Was this dumb?